human impact on the biosphere chapter 6. the tragedy of the commons when a resource (like the...
TRANSCRIPT
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HUMAN IMPACT on theBIOSPHERE
Chapter 6
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The Tragedy of the Commons• http://www.youtube.com/watch?v=EZFkUeleHPY
When a resource (like the environment) is shared, everyone can use it but no one is responsible for protecting it.
Each person just uses “a little”, but it often results in the destruction of the “commons”
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__________ participate in __________ and biogeochemical ______
Ecosystems provide us witha variety of ___________
HUMANS Food webscycles
http://www.brevardcounty.us/mrrp/images/misc/boat_cartoon.jpghttp://www.physicalgeography.net/fundamentals/images/nitrogencycle.jpg
http://www.physicalgeography.net/fundamentals/images/nitrogencycle.jpg
resources
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A __________________ is anything an organism needs for life
RESOURCE
REMEMBER
NATURAL RESOURCES =
LAND AIR FORESTSWATERhttp://www.lenntech.com/images/discharge.gif
http://www.newtonswindow.com/problem-solving.htm
http://coweeta.ecology.uga.edu/coweeta_photographs/erosion.htm
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________________ RESOURCES
• Living can ____________
• Non living replaced by _____________________
regrow
RENEWABLE
http://www.inclusive.co.uk/downloads/images/pics2/tree.gif http://www.sfu.ca/aq/archives/Nov2007/features/fish_story.htmlhttp://www.navitron.org.uk/wind/600kw.JPG
Biogeochemical cycles
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Renewable does NOT mean __________
Ex: _____________ is a renewable resource but can become limited by
______ OR _______
unlimitedFresh water
http://earth.ooups.com/uk/images/100/tapwater.jpg http://www.wrightwoodcalif.com/watershort/ConserveWater.JPG
drought overuse
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Although water is a ______________ resource, the total supply of fresh water is __________.
FRESH WATER RESOURCES
http://www.mos.org/oceans/graphics/planet/watercycle.jpg
limited
renewable
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Wetlands remove ________ and______ water passing through.
FRESH WATER RESOURCES
http://www.epa.gov/bioiweb1/aquatic/importance.html
purify
pollutants
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can _______________________ by natural processes
NOT BE replenished
NONRENEWABLE RESOURCES
http://www.greenpeace.org/raw/image_full/international/photosvideos/photos/illegal-deforestation-and-land.jpghttp://www.npr.org/news/images/2005/aug/16/pumping_gas200.jpg
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HUMAN POPULATION
http://www.learner.org/jnorth/spring2002/species/spring/Update041902.html#Humankind
You are here
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WORLD POPULATION
•Current world population is just over _____________ •Estimates predict it will reach
9 billion by 2050http://www.peopleandplanet.net/
World clock
Image from: http://www.sleepbamboo.com/planet_people.jpg
7 BILLION
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HUMAN ACTIVITIES that harm the planet
______________________
________________
_______________________________ ___________________________
___________________________
_____________________________
OVER HUNTING
AGRICULTURE
POLLUTION
HABITAT DESTRUCTION
Images from: http://www.cs.utexas.edu/users/s2s/latest/art1/src/proj/Art/cave_art/Hunters-Deer.jpghttp://www.istockphoto.com/file_thumbview_approve/127525/2/istockphoto_127525_farming.jpghttp://www.kidcrosswords.com/kidoutdoors/the%20environment/pollution_smokestacks.jpghttp://www.lubee.org/images/about-threats-1.jpg
POACHING
URBAN DEVELOPMENT
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HUNTING AND GATHERING Throughout human history, people
have ________ and _______ in rivers, and
_________ wild seeds, fruits, and nuts.
We are still doing this today in many places.
http://www.amonsoquath.net/gallery/pages/chee.htmlhttp://www.travelwriter.co.za/let-the-train-strain_p2.html
hunted fishedgathered
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WHEN IT BECOMES A PROBLEM?
_________________
________________
http://www.aeffonline.org/images/poachersandelephant.jpg
http://msnbc.msn.com/id/8302763
OVERHUNTING
POACHING
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OVERHUNTING can put animal populations at risk of ____________extinction
Alagoas Curassow: extinct in wild 1980’s
Miss Waldron’s Red Colobus monkey Extinct 2000
http://www.petermaas.nl/extinct/speciesinfo/misswaldronredcolobus.htmhttp://www.birdlife.org/datazone/species/index.html?action=SpcHTMDetails.asp&sid=100&m=0http://lawyerkm.files.wordpress.com/2008/09/dodo_11.jpghttp://en.wikipedia.org/wiki/Moa
Moa: extinct 1500’s
Dodo: extinct 1681
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VOCABSpecies that has died out =
______________
Species whose population size is rapidly declining and will become extinct if the trend continues = _____________
Species that is at risk of becoming endangered in the near future = ____________threatened
extinct
endangered http://www.blackfootedferret.org/
http://www.fresnochaffeezoo.com/images/bald-eagle.gif
http://www.southeastutah.org/photos/dino.jpg
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International Union for Conservation of Nature ( IUCN) RED LIST
= world's main authority on the conservation status of species
Currently 3079 animals and 2655 plants classified as Endangered worldwide
Compared with 1102 animals and 1197 plants in 1998
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EXAMPLE: WHALES During the 19th and the earlier part
of20th centuries, over-hunting led to asevere _________of whalepopulations, and to _______________of many whale species.
http://en.wikipedia.org/wiki/Whaling#Conservation_status
overkillendangerment
http://news.bbc.co.uk/2/shared/spl/hi/guides/456900/456973/html/nn1page1.stm
Minke whale = most hunted species
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Today many major whales species are endangered
North Atlantic Right < 350
Southern Right 3000
Bowhead 8000
Blue 2,300
Sei 10-28,000
Humpback 10,000
Bowhead 8,000
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North American Buffalo
___________ in America once numbered 30 - 60 million, ranging from Virginia to Alaska.
By 1884, the buffalo was close to extinction due to __________.
http://en.wikipedia.org/wiki/American_Bison
Pile of bison skulls, 1870’s
Wild buffalo
overhunting
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WHY POACH?
Many endangered big game animals today are threatened by__________________
http://cnnstudentnews.cnn.com/EARTH/9710/02/kenya.ivory.ap/
Illegal poaching
http://www.aeffonline.org/images/poachersandelephant.jpg
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WHY POACH?• Fur• Tusks/horns• Tourist souveniers• Medicine ?• Artwork
http://studentweb.cortland.edu/giambalvo73/poaching.jpg
http://www.ens-newswire.com/ens/jul2009/20090716_rhinopoaching.jpg
http://www.sciencebuzz.org/sites/default/files/images/ivory.jpghttp://www.peterpalms.com/fox/pictures/silverfoxcoat.jpghttp://d-vers.com/images/medium/PMTung/Chinese-Ivory-Carved-Hippo-Tusk-Family-Of-Rhinos/Chinese-Carved-Ivory-Hippo-Tusk-Family-Of-Rhinocerous.jpg
$
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EXAMPLE: Rhinos• All five rhino species are ____________
Just a few decades ago, the world’s rhino population exceeded 100,000, but today there are less than 11,000 due to _____________ and _____________.
_______________ are in demand in many countries where they can bring over $60,000/lb.
~ ground into medicine (China) ~ carved into ceremonial dagger handles
(Yemen) http://nationalzoo.si.edu/Publications/ZooGoer/2003/6/Sidebar_Forensics.cfm
Rhino horns
habitat loss poaching
endangered
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HOW DO WE HELP?
•Preserves/Sanctuaries•Captive breeding programs•Laws/regulations•Support “GREEN”
organizations
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PRESERVES/SANCTUARIESPreserving habitatEstablishing protected areasGame ranger patrols to prevent
poachingEducation
http://asiancorrespondent.com/74455/sumatran-elephants-could-be-extinct-in-30-years/
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___________________
Animals are raised and protected in zoos until population is stable, then returned to wild
How do we help?
Captive breeding
http://www.blackfootedferret.org/
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HOW DO WE HELP?CAPTIVE BREEDING:
Conservation efforts, private ownership, and
reintroduction of buffalo have allowed thepopulation to recover
Today-total bison population in North America is estimated at
500,000
About 85 percent of these animals are privately owned. http://en.wikipedia.org/wiki/American_Bison
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LAWS/REGULATIONSInternational Whaling Commission
hasplaced a moratorium on whaling for
certain species
Only works if nations voluntarily comply
http://www.cdnn.info/eco/whaling_250146.jpg
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LAWS & REGULATIONSThe_______________________________________
_________________ (CITES)bans international ______ in productsfrom endangered species.
trade
http://www.mtholyoke.edu/~sjberg/CITES.htm
Convention on International Trade in Endangered Species
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WHAT CAN WE DO TO HELP?Support “Green” organizations
that work for laws to establish quotas and protect species.
http://www.sierraclub.org/http://www.ducks.org/states/62/index.html
http://www.nwf.org/http://www.maksimum.com/haberler/h/greenpeacee_cevre_cezasi.phphttp://www.sierraclub.org/http://www.brookingshumane.org/
POWER OF ONEVIDEO
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THREATS TO BIODIVERSITY_______________________
__________________ ________________ ________________ ________________ ________________
________________
HABITAT DESTRUCTION
FragmentationInvasive species
Agriculture
DeforestationUrban development
Pollution
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Importance of AgricultureBy middle of 20th century, despite agricultural advances there were ________________in many parts of the world.
Governments and scientists began a major effort to ___________ food production
food shortages
increase
http://www.enjoy.org/hstech/HungerSite02/america/FordSchwartz/
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1.New more productive plant ________
2. Modern farming____________ allowed planting larger areas
3. Chemical ___________ & ___________ boosted crop production and controlled pests
techniques
http://interactive.usask.ca/ski/media/stills/agriculture/crops/t_plant-breeder.jpghttp://www.wfbf.com/media_center/photo_gallery/Soybean%20combine.jpg
__________ REVOLUTION
strains
fertilizers pesticides
GREEN
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HOW WE HARM THE ENVIRONMENT
Large fields are planted with a single variety year after year = ________________
http://imagesource.allposters.com/images/NGSPOD04/107870.jpg
MONOCULTURE
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WHY IS THIS A PROBLEM?Modern MONOCULTURE agriculture allowsfarmers to grow more food BUT . . .
__________ and ______________
~ kill ________ insects
_________from feedlots and fields ~ __________ surface and ground water
Fertilizers pesticides
beneficial
Contaminate
Runoff
http://www.biology-blog.com/images/blogs/10-2007/fertilizer-15101.gifhttp://cms1.good.is/posts/full_1289265646pesticides.jp
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Impact of Agriculture
Wearing away of topsoil = ____________ is caused by plowing land and removing plant roots
Soil erosion
http://coweeta.ecology.uga.edu/coweeta_photographs/erosion.htm
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Impact of Agriculture____________ = changing of fertile
land in dry climates into desert areas caused by farming, overgrazing, and drought
Desertification
http://www.the-human-race.com/images/environment/drought.jpg
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Challenges for FutureFinding enough __________ for irrigation is another problem.
Less than ¼ of US farmland relies heavily on ___________, but this area produces a __________ portion of our harvest.
http://www.suu.edu/faculty/bowman/Econ1740/HeilbronerZinn/ogallala_aquifer_map_pic_2.gif
water
irrigation
major
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Challenges for FutureMany Midwest states relyon the ___________aquifer for their water needs.
We are ______________faster than thewater cycle can _____________ it.
Evidence indicates this aquifer may _________ within 20-40 years.
http://www.suu.edu/faculty/bowman/Econ1740/HeilbronerZinn/ogallala_aquifer_map_pic_2.gif
OGALLALA
replenish
run dry
using water
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HOW DO WE HELP?Modern_________ is changing how farmers farm and lessening the impact on the environment.
EX:__________ imaging _____ technologyenable farmers toapply chemicals onlywhere______________
technology
SatelliteGPS
needed
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HOW DO WE FIX IT?EX:________ and other “green” farming
methods can reduce ____________and protect ___________________
http://cbarc.aes.oregonstate.edu/images/no-till.jpg
“No-till”soil erosion
ecosystems
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Cover CropsLegumes, grasses, and othercover crops recycle soil nutrients,reduce fertilizer need, andprevent weed growth.
Controlled GrazingBy managing graze periods and herddensities, farmers can improve nutrientcycling, increase the effectiveness ofprecipitation, and increase the carryingcapacity of pastures.
Biological Pest ControlThe use of predators and parasitesto control destructive insectsminimizes pesticide use as well ascrop damage
Contour PlowingContour plowing reduces soil erosion from land runoff. On hilly areas, plowing is done across the hill rather than straight up and down.
Crop RotationDifferent crops use and replenish different nutrients. By rotating crops, the loss of important plant nutrientsis decreased.
A B C
Yr. 1
Yr. 2
Yr. 3
Sustainable Agriculture Ways to preserve the environment
corn
corn
corn
alfalfa
alfalfa
alfalfa
oats
oats
alfalfa (plowed in)
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INDUSTRIAL GROWTH and URBAN DEVELOPMENT
The impact of humans on the biosphere wastransformed by the_____________________during the 1800’s.
http://www.archives.gov/research/american-cities/images/american-cities-015.jpg
INDUSTRIAL REVOLUTION
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Industrial productivity and scientificadvancements have provided us with the ______________________ we enjoy today
modern conveniences
http://www.vallartasource.com/images/cell_phone.jpghttp://www.danielwiener.com/daniel/tips/archives/humvee_2.jpghttp://www.scriptfx.com/gallery/computer/laptop.jpghttp://www.wii-volution.com/images/wii/gamecube.jpghttp://www.nbz.ru/pic/catalog/ipod/ipod_color.gif
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FOREST RESOURCESLoss of forests = ____________can result in erosion and loss of
nutrients preventing regrowth
deforestation
http://www.greenpeace.org/raw/image_full/international/photosvideos/photos/illegal-deforestation-and-land.jpg
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DEFORESTATION
The tropical rainforests once covered more than 14% of the earth's total land surface, but now cover less than 6%.
http://www.abc.net.au/news/newsitems/200506/s1384632.htm
Changes in Brazilian rainforest over 30 years
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HABITAT DESTRUCTIONhttp://www.lubee.org/images/about-threats-1.jpg
Tropical rainforests are disappearing at a rate of about 80 acres per minute.
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BIODIVERSITY THREAT
Nearly half of the world's species of plants, animals and microorganisms will be destroyed or severely threatened over the next quarter century due to ____________________________
http://www.wri.org/biodiv/pubs_maps_description.cfm?ImageID=1553
rainforest deforestation.
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HOW DO WE HELP?
Sustainable development:• Stop clear cutting of
forests/jungles• Selective harvest of mature trees• Replanting of logged areas• Tree farms• Breeding new, faster growing
species
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WHAT’S THE PROBLEM?• Destruction of habitats• Air & water pollution• Use of resources• Uses lots of fossil fuel
All lead to a decrease in _______________
http://www.kidcrosswords.com/kidoutdoors/the%20environment/pollution_smokestacks.jpg
BIODIVERSITY
http://tuberose.com/Environmental_Toxicity.html
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Scientists estimate there are 10-30 millionplant and animal species on the planetMost of these are unidentified.
Some scientists estimate at the rate we are going___ of the plants and animals will be committed to extinction by 2050
http://www.igreens.org.uk/extinctions_predicted_from_globa.html
Image from: http://members.graphicsfactory.com/clip-art/image_files/tn_image/2/1313572-tn_TombStone001_92007.jpg
1/4
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Officially over 5,000 species ofanimals and birds are listed asEndangered or Threatenedon our planet
Believed that some 10,000 species have gone extinct in just the past 100 years
http://www.globalanimal.org/2011/12/18/2012-the-year-of-extinction/61240
Image from: http://members.graphicsfactory.com/clip-art/image_files/tn_image/2/1313572-tn_TombStone001_92007.jpg
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BIODIVERSITY THREATDevelopment of natural areas for cities oragriculture results in ____________________habitat destruction
http://www.simtropolis.com/idealbb/files/SG_ShoppingCenter.JPG
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BIODIVERSITY THREATSplitting a habitat into smaller
disconnected pieces = _____________________
It results in small “islands” of natural area isolated from each other by crop land, pasture, pavement, or even barren land.
Habitat fragmentation
http://en.wikipedia.org/wiki/Habitat_fragmentation
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BIODIVERSITY THREAT
Habitat fragmentation brings wildlife in
more frequent contact with humans.
When it comes down to “us or them” . . .“they” usually lose.
http://www.chrismadden.co.uk/eco/peterrabbit.html
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WHAT DOES IT MEAN? REMEMBER! Everything is connected.
BIODIVERSITY is a measure of the _________ of an ecosystem.
_______ DIVERSITY = ___________
Image from: Pearson Education Inc, publishing as Pearson Prentice Hall ©2006http://images1.wikia.nocookie.net/__cb20061028011328/uncyclopedia/images/4/4f/JengaTower.jpg
HEALTH
MORE BETTER
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BIODIVERSITY THREATOne of most important threats tobiodiversity come from apparently
harmlessplants or animals that humans transport
into new habitats =____________________
New habitats don’t have ____________and parasites that control the populationin their native habitats, so invasive
speciespopulations _____________ rapidly.
INVASIVE SPECIES
PREDATORS
INCREASE
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EXAMPLES OF INVASIVE SPECIES
http://en.wikipedia.org/wiki/Image:Wild_rabbit.jpg
24 rabbits turned loose for hunting in 1859 in Australia, reproduced at such a rapid rate they have taken overthe continent.
http://psephos.adam-carr.net/countries/a/australia/images/australiamap.gif
Within 10 years they had multiplied so rapidly, 2 million rabbits a year could be shot or trapped without any noticeable effect on population.
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EXAMPLES OF INVASIVE SPECIEShttp://en.wikipedia.org/wiki/Image:Rabbit-erosion.jpg
They are believed to be responsible for the ___________ of 1/8 of the mammal species, unknown numbers of plant species, as well as serious _____________ problems.
It is still a major problem and rabbit diseases have been purposely introduced to try to control the population.
http://www.csiro.au/communication/rabbits/qa1.htm
soil erosion
extinction
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EXAMPLES OF INVASIVE SPECIES
_________________ are native to the Caspian Sea region of Asia. They are believed to have been transported to the Great Lakes in the ballast water from a ship.
They were first discovered in 1988, and have since spread rapidly to all of the Great Lakes and waterways in many states including _______________________and into Canada.
http://en.wikipedia.org/wiki/Image:Dreissena_polymorpha3.jpg
Zebra mussels
SOUTH DAKOTA
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PROBLEMS CAUSED BY ZEBRA MUSSELS
•Clog power plant and public water intakes and pipes, costing taxpayers millions of dollars· Damage boat engines · Blanket shorelines with their sharp shells and foul smell· Consume available food for native species and smother native mussels· Threaten water-based recreational activities
http://en.wikipedia.org/wiki/Zebra_mussel
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EXAMPLES OF INVASIVE SPECIES
__________________ is native to Europe and Asia and first appeared in Massachusetts in 1827.
http://www.team.ars.usda.gov/v2/ctoavsimages/newfrontpgpic2.jpg
Across _____________ and much of the Great Plains, leafy spurge is one of the most threatening invasive plants, ____________ out native grassland and damaging ___________________.
LEAFY SPURGE
South Dakota
crowding
grazing land
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EXAMPLES OF INVASIVE SPECIES
302,000 acres in South Dakota are infested withLEAFY SPURGE.
According to the U.S. Department of Agriculture, leafy spurge infestations in the Dakotas, Montana and Wyoming alone cost agricultural producers and taxpayers at least $144 million annually in production losses, control expenses and other impacts to the economy .
http://www.nps.gov/plants/alien/map/eues1.htm
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BIODIVERSITY THREATThe addition of ________________
= harmful materials that can enter the biosphere through land, water or air can also threaten biodiversity.
pollutants
http://www.kidcrosswords.com/kidoutdoors/the%20environment/pollution_smokestacks.jpghttp://www.iol.ie/~carigeen/pollution.jpg
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___________ = harmful material that can enter the biosphere through land, air, or water
________ = Mixture of chemicals that
appear as a gray-brown
haze in the atmosphere
AIR RESOURCESPollutant
smog
http://www.cyberolimpiadas.com.sv/proyectos2004/gamma/proyecto3/smog.jpg
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Burning __________ releases pollutantsthat cause smog and other problemsin atmosphere.
Toxic chemicalslike nitrates, sulfates, and particulatescan cause ________________like ___________
AIR RESOURCES
http://www.cyberolimpiadas.com.sv/proyectos2004/gamma/proyecto3/smog.jpg
fossil fuels
breathing problems asthma
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Example:_____ was first modern insecticide
It was cheap, stayed active for long time, and kills many different insects
Used to control agriculture pests and disease carrying _______________
DDT
http://www.michigan.gov/images/mosquito_65147_7.jpg
MOSQUITOES
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When DDT was sprayed, it drained into rivers and streams at LOWconcentrations.
http://www.ci.cypress.ca.us/public_works/stormwater_images/kids_watershed.jpg
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DDT in the environment gets into organisms through the ___________, is stored in __________, and
doesn’t ______________.
http://www.geocities.com/~greyhawk_1/sh_eagle-9.jpg
food chaintissues
degrade
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______________________________
= the ____________ of a harmful substance
____________as it passes to organisms at
_______________levels in food chain or web.
BIOLOGICAL MAGNIFICATION
Plants pick up DDT from water& store it
Herbivores eatplants and storesome DDT
Carnivores eatherbivores and store more DDT
→ →
concentration
increases
higher trophic
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Fish-Eating Birds
Magnification ofDDT Concentration
10,000,000
100,000
10,000
1,000,000
1
1000
LargeFish
Small Fish
Zooplankton
Producers
Water
Section 6-3
Figure 6-16 Biological Magnification of DDT
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The wide spread use of DDT threatened many species… especially fish eating birds like osprey, brown pelican, andbald eagles.
DDT causes birds to layeggs with ___________shells so eggs would break when sat on.
American Bald Eagle was declaredendangered in 1967. It has since beenreclassified as _____________________
fragile
“threatened”
http://image10.webshots.com/11/3/94/67/2146394670011493049pwlCDV_ph.jpg
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In 1962, American biologist _______________ published the book,_____________ which told of DDT’s harmful effects.
The book led to a large public outcry and eventually resulted in DDT being _________ in the United States in the 1970’s
The book was one of the important events in the birth of the _________________________.
Rachel Carson
Silent Spring
banned
http://www.kimball.k12.sd.us/Heroes%20Web%20Page/Pictures/Rachel%20Carson.jpg
environmental movement
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•Smokestack “Scrubbers” can control emissions
•Auto emission standards•Clean air regulations•Reduce use of fossil fuels
HOW DO WE HELP ?
http://www.alexvisani.com/darkgallery/smog.jpg
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Americans use BILLIONS of gallons offreshwater daily for ________, ________and ___________________
FRESH WATER RESOURCES
http://www.thesolutionsite.com/lesson/4601/freshwater.jpg
drinking washingwatering crops
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DON’T FORGET THE _________________Water used to make products that we don’t
think or know about The PRODUCTION OF:• 1 kg wheat costs 1,300 L water • kg rice costs 3,400 L water • 1 kg eggs costs 3,300 L water • 1 kg beef costs 15,000 L water • 1 cotton shirt costs 2,500 L water • 1000 g of blue jeans costs 10,850 liters water • 1 ton passenger car costs 400,000 liters of water• Building a house uses about 6 million liters of water
VIDEO http://www.youtube.com/watch?v=-nekqKEsbdU
“INVISIBLE WATER”
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•Water conservation•Protect wetlands
and forests•Water treatment plants•Clean water regulations
HOW DO WE HELP ?
hhttp://www.romanviii.co.uk/bp/nhpage.asp?pcat=about_us
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WAYS TO CONSERVE WATER
http://www.watersavingtips.org/images/saving_1.jpg
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Human activities affect ________________ like land, forests, air, fresh water.
How can we provide for our needswithout using up all resources?_____________________________
THE BIG QUESTION ?
renewable resources
= SUSTAINABLE DEVELOPMENT
~ Use natural resources without using them up ~ Provide for human needs WITHOUT causing long term environmental harm
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CONSERVING BIODIVERSITY
Wise management of natural resources =__________________
Protecting endangered species requiresdetailed information about ecological
_________________
We can’t protect a species without understanding how it ____________ with the _________________.
conservation
relationships
interactsecosystem
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Todayconservationefforts focus onprotecting entireecosystems notjust individualspecies
______________ =are places that areMOST endangered
CONSERVING BIODIVERSITY
Image from: Pearson Education Inc publishing as Pearson Prentice Hall© 2006
HOT SPOTS
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• Urban planning so there is less “ Sprawl”
• Set aside land for parks/preserves
• Research to understand species/ecosystem interactions
• Concentration of $ on “HOT SPOTS”to maximize results for
$ spent
WHAT CAN BE DONE?
http://www.anselm.edu/homepage/jpitocch/genbios/piplosign6403.jpg
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HUMAN IMPACT on the BIOSPHERE
Chapter 6-4
Charting a course for the Future
http://www.claybennett.com/pages2/mistletoe.html
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BIG ENVIRONMENTAL PROBLEMS
___________________
___________________
___________________
___________________
___________________
ACID RAIN
http://www.acmecompany.com/stock_thumbnails/13808.greenhouse_effect_2.jpg
OZONE DEPLETION
DEAD ZONES
GLOBAL CLIMATE CHANGE
WASTE
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DEAD ZONES
When an ecosystem receives a LARGE inputof limiting nutrient (ie., fertilizer runoff) thepopulation increases dramatically = ___________
REMEMBER !
ALGAL BLOOM
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Gulf of Mexico Dead Zone
http://www.ncat.org/nutrients/hypoxia/hypoxia.html
The DEADZONE forms each April, generally grows throughout the summer, reaching a peak in late July.
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Gulf of Mexico Dead Zone
At its peak, the nearly lifeless water can span 5,000 to 8,000-plus square miles, an area almost the size of New Jersey
http://serc.carleton.edu/microbelife/topics/deadzone/index.html
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DEAD ZONESHow do we HELP?
Use modern technology and “green” farming methods to:
•Decrease agricultural fertilizer use
• Decrease runoff of agricultural waste
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Our atmosphere between
20-50 km contains
high concentrations
of ____________
which protect us from
the sun’s harmful
______________ radiation.
OZONE LAYER
ultra-violet
http://pubweb.bnl.gov/users/xujun/www/bnl/ozone_layer_1.gif
OZONE (O3)
http://www.planetguide.net/book/chapter_5/ozone_layer.html
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EFFECTS OF UV RADIATION
Click here to see a movie about the effects of UV radiation
WMV, 618K
__________________________________
________________________ of skin
__________________________________
Reduces ________________
Disrupts __________________ in oceans
Skin cancer
Cataracts/blindness
Premature aging
crop yield
food chains
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WHAT WE KNOW
Scientists have been
monitoring the ____________
of ozone in our atmosphere
and have discovered
a hole in the ozone layer
over ____________.
depletion
Antarctica
http://ozonewatch.gsfc.nasa.gov/facts/hole.html
Click here to see a movie about the ozone hole
WMV, 616K
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The annual ozone "hole“ over Antarctica hasoccurred during the Antarctic Spring (October)since the early 1980s.
Rather than being an actual hole through the layer, the ozone hole is a large area with extremely low amounts of ozone. Ozone levels fall by over 60% during the worst years.
http://ozonewatch.gsfc.nasa.gov/facts/hole.html
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Ozone depletion is a global issue NOTjust a problem at the South Pole.
Research has shown that ozone depletionalso occurs over North America, Europe,Asia, and much of Africa, Australia, andSouth America.
Over the U.S., ozone levels have fallen 5-10%, depending on the season.
http://home.casema.nl/daveduijn/globe2.gif
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What’s the cause of Ozone Depletion?
Chlorofluorocarbon
molecules _______
released from
air conditioners,
aerosol spray cans,
fire extinguishers,
and industry
________________destroy ozone
http://www.atm.ch.cam.ac.uk/tour/part3.html
(CFC’s)
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HOW DO WE HELP?
1987- the _______________________ committed signing nations (including USA) to a ____________ in the use of CFCs and other ozone-depleting substances.
CFC production was _________ after 1995 in the developed countries, and later in developing countries. Today, over 180 countries have ratified the treaty.
OZONE DEPLETION
MONTREAL PROTOCOL
REDUCTION
banned
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_____________spray cans no longer contain CFC propellants.
Gases in ___________________and _____________ are collected and recycled.
THAT’S WHY . . .AEROSOL
AIR CONDITIONERS
http://www.roundrocktexas.gov/images/spray_cans_large.jpg
refrigerators
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OZONE DEPLETIONHow do we help?
We can't make enough ozone to replace what's been destroyed, but provided that we stop producing ozone-depleting substances, computer models predict natural ozone production reactions should return the ozone layer to normal levels by about 2050.
This is the first example of different countries getting together on an environmental issue, agreeing on what to do, doing something, and seeing a positive effect
http://www.gifs.net/image/Words/Wow/Wow_rotates/4031
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Emissions to AtmosphereNitrogen oxidesSulfur dioxide
Chemical TransformationNitric acid
Sulfuric acid
PrecipitationAcid rain, fog,snow, and mist
Dry Fallout
Condensation
particulates, gases
Industry Transportation Ore smelting Power generation
ACID RAIN
What’s the cause?________________________BURNING FOSSIL FUELS
Releases _______________ and ________________ into the atmosphere that react with water toproduce ACID RAIN.
Sulfur oxidesNitrogen oxides
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http://www.robl.w1.com/Pix/C900991.jpghttp://www.geocities.com/kamil_pollutionpage/AcidRain.htm
http://www.scienceacross.org/media/samplingforacidrainNOAAedSAW.jpg
http://www.abc.net.au/quantum/scripts99/9905/img/asthma.jpg
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ACID RAIN EFFECTS• damages buildings and statues• damages forests• kills fish• reduces biodiversity• causes illness & premature death
from heart & lung disorders like asthma and bronchitis
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HOW DO WE HELP?
Cut down on activities that use fossil fuels~ conserve electricity~ drive less
Drive automobiles with increased fuel efficiency OR run on alternative fuels
ACID RAIN
Recycle (uses less energy than starting from scratch)
Develop a National energy policy that emphasizes use of alternative renewable energy sources
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GREENHOUSE EFFECTTemperatures of Earth remain within a range
______________ because the _____________
acts as a natural _________________ blanket.
atmosphere
http://wwwstatic.bayareawritingproject.org/images/bawp41/earthAtmosphereIMG.gif
suitable for life
insulating
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GREENHOUSE EFFECTAtmospheric gases such as
___________________
___________________
___________________
___________________
NORMALLY trap heat
energy from the sun
like a greenhouse
= _____________________
Carbon dioxide (CO2 )
http://www.acmecompany.com/stock_thumbnails/13808.greenhouse_effect_2.jpg
Greenhouse effect
methane water vaporCFC’s
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GLOBAL CLIMATE CHANGE- Is it real?
Some people say that the Earth hascycles of warmer/cooler climate change and that this is just part of that cycle.
Most scientists believe that the increase inglobal temperatures is the result of humanactivities that have increased the amount ofCO2 and other greenhouse gases in theatmosphere
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In 2007 in Paris a U.N.- backed panel of international scientists issued a major announcement on climate change stating that:
1. "warming of the climate system
is unequivocal“2. There is a 90% probability the cause “man- made”.
Either way… our planet is getting warmer!
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Global mean surface temperatures have increased 0.5-1.0°F since the late 19th century.
The 20th century's ten warmest years have occurred in the last 15 years of this century.
FACTS WE KNOW
http://content.answers.com/main/content/wp/en/thumb/8/87/280px-Instrumental_Temperature_Record.png
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The snow cover in the Northern Hemisphere and floating ice in the Arctic Ocean have decreased.
FACTS WE KNOW
Graph & glacier pix: http://nsidc.org/sotc/glacier_balance.html polar bears: http://www.metro.co.uk/news/article.html?in_article_id=35720&in_page_id=34
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FACTS WE KNOW
Greenhouse gases in the atmosphere have
increased steadily.
http://en.wikipedia.org/wiki/Image:Major_greenhouse_gas_trends.png
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WHAT’S the CAUSE? • Burning solid waste, fossil fuels
(oil, natural gas, and coal), wood and wood products
• Production and transport of fossil fuels
•Decomposition of organic wastes in landfills
• Animal sources (methane)
•Deforestation(trees remove CO2 from atmosphere)
GLOBAL CLIMATE CHANGE
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We’re freezing here!
What’s so bad about warming up a little?
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What’s so bad about warming up a little?
Coastal flooding
Cartoon from Brookings Register
http://healthandenergy.com/images/global2.gif
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What’s so bad about warming up a little?
http://zfacts.com/metaPage/lib/Atlantic_conveyor.jpg
Changes in Gulf Stream
http://www.claybennett.com/pages/ocean_temps.html
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What’s so bad about warming up a little?
More severe stormshttp://i.a.cnn.net/cnn/2005/WEATHER/08/25/tropical.storm/story.katrina.915p.jpg
http://en.wikipedia.org/wiki/Hurricane_Katrina
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What’s so bad about warming up a little?
Weather extremes
Brookings Register
http://www.cactus-art.biz/note-book/Dictionary/aaa_Dictionary_pictures/drought.jpg
Heat waves and drought
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What’s so bad about warming up a little?
Changing habitats meansloss of species
http://www.metro.co.uk/news/article.html?in_article_id=35720&in_page_id=34
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What’s the Kyoto Accord?• International agreement signed in 1997• Aimed at reducing global warming • Participants asked to _______ their ________________
emissions to a percentage below 1990 emission levels • Set binding targets for greenhouse gas (GHG)
emissions for countries to reach ___________
• 37 industrialized countries (includes US) which make almost 65% of greenhouse gases
(GHG) were to decrease to ~ 5% less than 1990 levels (US target = 7%)
REDUCEGREENHOUSE GAS
by 2012
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PROBLEMS WITH KYOTO ACCORDALL countries not required to reduce emissions equally
7% for the US, 6% for Japan, 0% for Russia,
Developing nations didn’t have to reduce emissions at allIndia and China, which have ratified the protocol, are not required to reduce carbon emissions under the present agreement despite their relatively large populations.
Developed nations (like USA) could meet required reductions by purchasing emission reductions from elsewhere and funding developing countries for climate related studies, projects, and technology
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KYOTO is “OLD NEWS”!The ________________ is the only major
industrial country that did NOT signed the Kyoto Accord.
Met in December 2009 - Copenhagen, Denmark
http://unfccc.int/meetings/items/2654.php
UNITED STATES
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Current Status• OBJECTIVE: to keep the maximum
temperature rise to below 2 degrees Celsius;
• the commitment to new reduction targets by developing countries for 2020
• Proposed $ 30 billion short-term funding for immediate action till 2012 and $100 billion annually by 2020 in long-term financing (still needs to be approved by countries)
• The challenge now is to turn what is agreed into something that is legally binding
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WHAT NEXT?• Some developed countries have already declared that
they will not continue to follow commitments to reduce emissions
• developing countries have increased their carbon emissions by 130% or more
• Delegates from nearly 200 countries have met several times for major climate talks, but no new agreement has been reached.
• They have just agreed to “talk about it”
• Some countries say no deal will be in place until at least 2020.
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What is a CARBON FOOTPRINT?
A ____________________ =
the total set of GHG (greenhouse gas) emissions caused directly and indirectly by an individual, organization, event or product
CARBON FOOTPRINT
http://www.gifanimations.com/animation/MenuSelection/1/56
http://www.nature.org/initiatives/climatechange/calculator/
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The US is no longer the #1 CO2 emitter
http://www.chrismadden.co.uk/eco/china-carbon-footprint.html
but . . . we contribute to the problem.
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Even if you don’t “believe” in global warming . . .
Even if countries can’t agree on emission levels …
we should still work to reduce our emissions of global warming gases BECAUSE . . .
http://matadornetwork.cachefly.net/bravenewtraveler.com/docs//wp-content/images/posts/20080418-planet.jpg
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THINGS WE DO TO “FIX CLIMATE CHANGE” make sense anyway!
http://www.inkcinct.com.au/Web/CARTOONS/2005/2005-379C--last-fossil-fuel.gif
Fossil fuels are a limited resource… eventually they will be gone!
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THINGS WE DO TO “FIX CLIMATE CHANGE” make sense anyway!
http://healthandenergy.com/global_warming_cartoons.htm
Our supply of fossil fuels is dependent on countries that are not “friendly” to the U.S.
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THINGS WE DO TO “FIX CLIMATE CHANGE” make sense anyway! Brookings Register March 2012
Our supply of fossil fuels is dependent on countries that are not “friendly” to the U.S.
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THINGS WE DO TO “FIX CLIMATE CHANGE” make sense anyway!
Brookings Register
Drilling for and transporting fossil fuels has negative environmental consequences
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THINGS WE DO TO “FIX CLIMATE CHANGE” make sense anyway!
Brookings Register
Drilling and transporting fossil fuels has negative environmental consequences
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THINGS WE DO TO “FIX CLIMATE CHANGE” make sense anyway!
Brookings Register
Drilling and transporting fossil fuels has negative environmental consequenceshttp://i2.cdn.turner.com/money/2011/04/14/news/companies/bp_meeting/deepwater_horizon_fire.top.jpg
http://pn.b5z.net/zirw/b12qa/i/u/68100167/i//Jan11/0126drill.jpg
BP oil spill in Gulf 2011
HOW QUICKLY WE FORGET!
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THINGS WE DO TO “FIX CLIMATE CHANGE” make sense anyway!
Innovation and alternative energy technologies for automobiles and power generation are good for our economy
Images from: http://www.cartoonstock.com/directory/R/Renewable_energy.asp
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THINK ABOUT ITScientists are RIGHT about man-made global warming
Scientists are WRONG about man-made global warming
WE KEEP DOING WHAT WE ARE DOING-NOTHING!
EnvironmentalDisasterConsequences too awful to think about
Still have other problems associated with fossil fuel use: pollution/acid rain/ dependence on our enemies
WE WORK TOGET OFF FOSSIL FUELS
CHANGES HELPTURN THINGS AROUND + solve other fossil fuel problems-
Solves other problems associated with fossil fuel use
REALLYBAD BAD
BEST! GOOD!
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HOW DO WE HELP?Develop a National energy policy that emphasizes use of alternative renewable energy sources
http://e360.yale.edu/images/features/stahl_0401_energy_policy.jpg
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HOW DO WE HELP?
Cut down on CO2 emissions (with or without the Kyoto accord)
Cut down on activities that use fossil fuels
Drive automobiles with increased fuel efficiency OR run on alternative fuels
GLOBAL CLIMATE CHANGE
Recycle (uses less energy than starting from scratch)Reduce deforestation (plants use CO2)
Watch your carbon footprint
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WHAT DO WE DO WITH OUR TRASH?
According to the Environmental Protection Agency, the average American produces about 4.4 pounds of garbage a day.
That adds up to a approximately 220 million tons of garbage each year for all of us.
This only takes into consideration the average household member and does not count industrial waste or commercial trash.
http://blog.lib.umn.edu/stau0156/architecture/garbage%20can.jpg
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PICTURE THIS:
It would bury more than 990,000 football fields under six-foot high piles of waste..
http://www.wisegeek.com/how-much-garbage-does-a-person-create-in-one-year.htm
http://wchs.warren.k12.in.us/athletics/Pictures/FOOTBALL%20STADIUM%20&%20PRESSBOX_gif.jpg
. . . and that’s just the United States!
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TRASH KILLS
http://lh4.ggpht.com/abramsv/SBAxRydox-I/AAAAAAAAPOs/IWuOgznte9Q/fish_story_003.jpghttp://www.mindfully.org/Plastic/Ocean/Sea-Plastic-LN-PG5oct05.htmhttp://saveourshores.org/files/md/Distorted-Turtle.jpg
It has been estimated that over a million sea-birds and 100,000 marine mammals and sea turtles are killed each year by ingestion of plastics or entanglement.
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http://lowcarbonhome.info/wp-content/uploads/2008/05/plastic-garbageii.jpg
PLASTIC IS MADE FROM FOSSIL FUELS!
PLASTIC IS FOREVER!
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PACIFIC OCEAN GARBAGE GYREhttp://earthfirst.com/wp-content/uploads/2009/01/floating-trash.jpg
Covers an area twice the size of TEXAS
Estimated to contain over 100 million tons of debris
Two linked areas on either side Hawaiian islands
Western and Eastern Pacific Garbage Patches
http://islandbreath.org/2008Year/05-environment/0805-08ThePlasticGyres.html
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Why is the world's biggest landfill in the Pacific Ocean?
• See a video
http://www.jadedthea.com/images/PacificGyre.gif
http://www.youtube.com/watch?v=Lt-MivNezes&NR=1
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We Can’t Just Keep Piling it up in Landfills
We have to REDUCE, REUSE, RECYCLE
Plastic recycling videohttps://www.youtube.com/watch?v=-JQYwF4VyiY
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QUOTES
This we know... the earth does not belong to man,man belongs to earth. All things are connected,like the blood which connects one family.
Whatever befalls the earth befalls the children ofthe earth. Man did not weave the web of life –he is merely a strand in it. Whatever he does tothe web, he does to himself.
~ Chief Seattle, 1854
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If you want to see an endangered species, get up and look in the mirror.
~ John Young, former Apollo astronaut
A true conservationist is a man who knows that the world is not given by his fathers,but borrowed from his children.
~ John James Audubon, 1785 - 1851
It's not easy being green.~ Kermit the Frog
Unless someone like you cares a whole awful lot, Nothing is going to get better. It's not. ~ Dr. Seuss, The Lorax
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WE NEED TO START CONSIDERING THE EFFECTS ON OUR PLANET WHEN WE MAKE DECISIONS!
http://www.claybennett.com/pages/earth_d5.html
http://www.chrismadden.co.uk/eco/hourglass.html
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SOURCES
http://www.romanviii.co.uk/bp/nhpage.asp?pcat=about_us
http://mff.dsisd.net/Environment/Cycles.htm
http://www.animation-station.com/smileys/index.php?page=17
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SOURCES
http://www.oldetimecooking.com/Images/Fruits/Apple.jpg
http://vilenski.org/science/safari/classifyall/eukaryotic.html
http://dustconnection.com/images/stories/cleaning_bucket_sm.jpg
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Core High School Nature of Science
Performance Descriptors
High school students performing at the ADVANCED level:
given a scientific discovery, evaluate how different societal, cultural, and personal beliefs influenced the investigation and its interpretation;
High school students performing at the
PROFICIENT level:
given a scientific discovery narrative, determine and describe how societal, cultural, and personal beliefs influenced the investigation and its interpretation;
High school students performing at the BASIC level:
describe the role of observation in the development of hypotheses, theories, and laws and conduct student investigations;
given a scientific discovery narrative, identify the cultural and personal beliefs that influenced the investigation.
![Page 151: HUMAN IMPACT on the BIOSPHERE Chapter 6. The Tragedy of the Commons When a resource (like the environment)](https://reader030.vdocuments.us/reader030/viewer/2022033100/56649dda5503460f94ad13df/html5/thumbnails/151.jpg)
Core High School Life/Earth Science
Performance Descriptors
High school students performing at the ADVANCED level:
predict the effect of an interruption in a given cycles;
predict how human activity may change the land, ocean, and atmosphere of Earth.
High school students performing at the
PROFICIENT level:
predict how life systems respond to changes in the environment;
describe how various factors may affect global climate;
explain how human activity changes the land, ocean, and atmosphere of Earth
High school students performing at the BASIC level:
describe one factor that may affect global climate;
give an example of human activity that changes the land, ocean, or atmosphere of Earth
![Page 152: HUMAN IMPACT on the BIOSPHERE Chapter 6. The Tragedy of the Commons When a resource (like the environment)](https://reader030.vdocuments.us/reader030/viewer/2022033100/56649dda5503460f94ad13df/html5/thumbnails/152.jpg)
Core High School Technology, Environment, Society
Performance DescriptorsHigh school students performing at the ADVANCED level:
modify a technology taking into consideration limiting factors of design;
given a narrative of a scientific discovery, defend a position on the impact of the ethical issues.
High school students performing at the
PROFICIENT level:
given a narrative of a scientific discovery, identify and evaluate the immediate and long-term consequences of scientific issues
evaluate factors that could limit technological design;
given a narrative description of a resource, analyze and describe the benefits, limitations, cost, and consequences involved in its use, conservation, or recycling
High school students performing at the BASIC level:
given a narrative of a scientific discovery, identify the immediate consequences of scientific issues;
identify ethical roles and responsibilities concerning a given research project;
identify factors that could limit technological design;
given a narrative description of a resource, describe a benefit and limitation involved in its use, conservation, or recycling.
![Page 153: HUMAN IMPACT on the BIOSPHERE Chapter 6. The Tragedy of the Commons When a resource (like the environment)](https://reader030.vdocuments.us/reader030/viewer/2022033100/56649dda5503460f94ad13df/html5/thumbnails/153.jpg)
Core High School Nature of Science
Performance Descriptors
High school students performing at the ADVANCED level:
given a scientific discovery, evaluate how different societal, cultural, and personal beliefs influenced the investigation and its interpretation;
High school students performing at the
PROFICIENT level:
given a scientific discovery narrative, determine and describe how societal, cultural, and personal beliefs influenced the investigation and its interpretation;
High school students performing at the BASIC level:
describe the role of observation in the development of hypotheses, theories, and laws and conduct student investigations;
given a scientific discovery narrative, identify the cultural and personal beliefs that influenced the investigation.
![Page 154: HUMAN IMPACT on the BIOSPHERE Chapter 6. The Tragedy of the Commons When a resource (like the environment)](https://reader030.vdocuments.us/reader030/viewer/2022033100/56649dda5503460f94ad13df/html5/thumbnails/154.jpg)
Core High School Life/Earth Science
Performance Descriptors
High school students performing at the ADVANCED level:
predict the effect of an interruption in a given cycles;
predict how human activity may change the land, ocean, and atmosphere of Earth.
High school students performing at the
PROFICIENT level:
predict how life systems respond to changes in the environment;
describe how various factors may affect global climate;
explain how human activity changes the land, ocean, and atmosphere of Earth
High school students performing at the BASIC level:
describe one factor that may affect global climate;
give an example of human activity that changes the land, ocean, or atmosphere of Earth
![Page 155: HUMAN IMPACT on the BIOSPHERE Chapter 6. The Tragedy of the Commons When a resource (like the environment)](https://reader030.vdocuments.us/reader030/viewer/2022033100/56649dda5503460f94ad13df/html5/thumbnails/155.jpg)
Core High School Technology, Environment, Society
Performance DescriptorsHigh school students performing at the ADVANCED level:
modify a technology taking into consideration limiting factors of design;
given a narrative of a scientific discovery, defend a position on the impact of the ethical issues.
High school students performing at the
PROFICIENT level:
given a narrative of a scientific discovery, identify and evaluate the immediate and long-term consequences of scientific issues
evaluate factors that could limit technological design;
given a narrative description of a resource, analyze and describe the benefits, limitations, cost, and consequences involved in its use, conservation, or recycling
High school students performing at the BASIC level:
given a narrative of a scientific discovery, identify the immediate consequences of scientific issues;
identify ethical roles and responsibilities concerning a given research project;
identify factors that could limit technological design;
given a narrative description of a resource, describe a benefit and limitation involved in its use, conservation, or recycling.