bell ringer which line is the predator? which line is the prey? what happens to the predator...
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Bell RingerWhich line is the predator? Which line is the prey? What happens to the predator population when the prey population decreases? What causes the prey population to decrease?
T-Chart
Main Idea My DetailsPredator-Prey Relationship-If prey population decreases then predator population decreases
The Effect of Human Activity
Humans affect global environments through: Agriculture Development Industry
Resources that are affected: Soil Water Atmosphere
Agriculture
One of the most important inventions in human history
Encouraged the growth of modern civilizations
Monoculture- planting the same crop in the same spot year after year.
Negatives: Use of water, soil, and fossil fuels
Development
Americans live in dense populated urban areas
Too crowded Developed Suburbs
More People = More Waste
Negatives: Consumes farmlands, destroys natural habitats Waste affects air, water, and soil
Industrial Growth
Inspired by the Industrial Revolution of the 1800s
Needed to provide the United States with up to date technology
Negatives: Requires A LOT of energy Industries have traditionally discarded wastes
directly into the air, water, soil
Sustainable Development
Sustainable Development- provides for human needs while preserving the ecosystems that produce natural resources
Should do more than just enable people to survive, it should help them improve their situation.
Examples: Solar Power, Wind Energy, Etc.
Renewable and Nonrenewable
ResourcesRenewable Resources- can be produced or
replaced by a healthy ecosystem Example: white pine tree, can grow back after
being cut down
Nonrenewable Resources- Natural processes can not replenish them in a reasonable amount of time.
Example: Fossil fuels take millions of years to renew
Class Assignment
Silently, list how humans are affecting the south shore or greater Chicago area environment. Give an example of each.
Closure
Write the conclusion section for our class MEL-Con. Generate 2 ideas for sustainable development and how it might help solve the problems that we listed earlier.
6.1 Review
3 human affectivities that affect biosphere: Agriculture- Farming Development-Urbanization, creating suburbs Industrial Growth-Factories, mass production
Resources that are affected: Soil Water Atmosphere
6.2 Using Resources Wisely
Key Questions:Why is soil important, and
how do we protect it?What are the primary
sources of water pollution?What are the major forms of
air pollution?
Soil Resources
Soil Erosion-removal of soil by water or wind Dust Bowl
Desertification- Process of farmland turning into desert
Causes: Farming, overgrazing, drought, and climate change
Soil ResourcesDeforestation-Loss
of forests Leads to severe soil
erosion
Trees help keep the soil in place, absorb carbon dioxide, and protects fresh water supplies Over half the worlds
old-growth forest have been lost to deforestation
Freshwater Resources
Humans depend on fresh water for: Drinking water Industry Transportation Energy Waste disposal
Water Pollution
Pollutant-a harmful material that can enter the biosphere
Point source pollution-enters from single source
Example: Oil spill or factory
Nonpoint source pollution: enters from many sources
Example: Run-off from the road or chemicals released into the air by cars and factories
Biological Magnification
Occurs when a pollutant, such as DDT, is picked up by an organism and is not broken down or eliminated from its body.
Travels through the energy pyramid
Class Activity
Individually, list a couple human activities that affect the south shore community environment.
Class Activity
As a group, discuss the factors that you just listed. Group every factor into categories.
Bell Ringer
List two ways to prevent soil erosion.
List 2 ways to reduce water pollution.
USE YOUR NOTES
Atmospheric Resources
AtmosphereAbsorbs harmful ultraviolet
radiationProvides oxygenRegulates global temperature
(without greenhouse effect, earth would be 30 degrees Celsius cooler)
Air Pollution
Smog- Gray-brown haze formed by chemical reactions among pollutants released into the air
Acid Rain
Acid RainCaused by releasing nitrogen and sulfur
into airCombine to form nitric and sulfuric acidCan kill plantsCan change composition of soil
Greenhouse Gases
Come from:CarsCows IndustryHomesAgriculture
Definition- Carbon gases that are released into the atmosphere that contribute to global warming and climate change
Corners Activities
After hearing the statement read by your teacher, please walk respectfully to the corner that you agree with most: Strongly Agree, Agree, Disagree, Strongly Disagree
Statement #1
The laws against trading ivory should be lifted. This will improve the global economy and get the United States out of this recession.
Statement #2
Crops are needed in order for humans to survive. Even though growing crops can cause soil erosion and hurt natural habitats, humans should continue to grow crops because they are needed to help humans survive.
Statement #3
Humans are the main reason why some natural habitats are no longer able to support the plant and animal populations that were once in that natural habitat.
Biodiversity
Biodiversity- total of all the genetically based variation in all organisms in the biosphere.
Types of Biodiversity
Ecosystem diversity- variety of habitats, communities, and ecological processes
Species diversity- number of different species in the biosphere, or in a particular area.
Genetic Diversity- sum total of all different forms of genetic information carried by a particular species
Threats to BiodiversityFive threats:
Altered Habitats- habitats eliminated for urban or agriculture reasonsHabitat Fragmentation-development
causes habitats to splitHunting and the Demand for Wildlife Products-
Causes extinction Introduced Species-
Example- Asian CarpPollution
Example- DDT (Biological Magnification)Climate Change
Conserving Biodiversity
Ecological hot spot- place where significant numbers of species and habitats are in immediate danger of extinction.
Bell Ringer
What are the five major threats to biodiversity? (Use your notes)
Who is responsible for these threats on biodiversity?
Bell Ringer
Explain why a paper company would say that deforestation is not as bad as people make it out to be.
At least 3 sentencesUse “Lorax” notes/worksheet
Chapter 6.4 Key Questions
How does the average ecological footprint in America compare to world’s average?
How can ecology guide us toward a sustainable future?
Ecological Footprints
Ecological Footprint-total amount of functioning ecosystem needed to both provide the resources a human population uses, and to absorb the wastes that population generates
Calculating Eco-Footprint
There is no universal method of measuring ecological footprints
Makes calculating footprints very difficult
Calculating Ecological Footprints
Footprint Calculator
Comparing Footprints
According to the diagram, the average American has an ecological footprint over four times larger than the global average.Twice the size of EnglandMore than twice the size of JapanSix times the size of China
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