the earth sea / oceans ---------------- 70% land-------------------------27% ice...
TRANSCRIPT
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The EarthThe Earth
Sea / oceans ---------------- 70%Sea / oceans ---------------- 70%
LandLand -------------------------27%-------------------------27%
Ice --------------------------- 3%Ice --------------------------- 3%(Antarctica and Greenland)(Antarctica and Greenland)
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The Earth and its climate Earth receives energy from the sun (radiation) Earth reflects about 30% of the solar radiation
Absorbs 70% of the radiation ( warming the land atmosphere oceans)
Visible radiation heats up the earth nor the atmosphere.
Constantly changing over 5 billion years Sometimes, climate has warmed, oceans have
risen, much earth covered. Earth average surface temperature : 20-300C
Warmer than it would be with out greenhouse effect.
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Atmosphere Covers the earth A thin layer of mixed gases, which makes
up the air we breath. Helps to avoid the earth becoming too cold
or too hot.
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Global WarmingGlobal Warming
• Warming of the Globe (Earth) due to solar
radiation and emission of gases including
human activities.
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THE PROCESS OF GLOBAL WARMING
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GLOBAL WARMING
Not from yesterday
Its for years ago
For hundreds of years;
Impact is not immediate
Yet, very serious
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Average composition of the atmosphere up to an altitude of 25km
Sl. No. Gas Name Chemical Formula Percent Volume
1
2
3
4
5
6
7
8
9
10
11
Nitrogen
Oxygen
*Water vapour
Argon
*Carbon dioxide
Neon
Helium
*Methane
Hydrogen
*Nitrous oxide
*ozone
N2
O2
H2O
Ar
CO2
Ne
He
CH4
H2
N2O
O3
*Variable gases
78.08%
20.95%
0 – 4%
0.93%
0.0360%
0.0018%
0.0005%
0.00017%
0.00005%
0.00003%
0.000004%
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CAUSES
?? ?
?
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GREENHOUSES
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Greenhouse A structure with glass or plastic roof and
frequently with glass or plastic walls for heating inside to warm plants, soil and other things kept inside.
Glass – A selective transmission medium.
Effective to trap energy within the greenhouse.
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Greenhouse gases Components of atmosphere Contribute to greenhouse effect Some GHG occur naturally in atmosphere Others result from human activities
(Burning of fossil fuels)
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Greenhouse gasesMajor: Water vapour 36 - 70%
(clouds not included ) Carbon dioxide 9 - 26% Methane 4 - 9% Ozone 3 - 7%Other Greenhouse gases: Nitrous oxide Sulfur hexafluoride Hydrofluorocarbons Perfluorocarbons Chlorofluorocarbons
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This graph shows the distribution of GHG in Earth's atmosphere. Carbon Dioxide is clearly the majority .
GREENHOUSE GASES
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Emissions of Carbon dioxide (CO2)
Methane (CH4)
Nitrous oxide (N2O)
Hydrofluro carbons Sulphur dioxide Perfluro carbons
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Pie chart shows how CO2 is produced
CARBON DIOXIDE
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Deforestation and Forest Fires contribute to an increase in CO2 levels
Cars also contribute to CO2 in the atmosphere.
CARBON DIOXIDE
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Cows such as these contribute a large amount of methane to the air.
METHANE
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CHLOROFLUOROCARBONS
Refrigerators and Air Conditioners using CFC's were a huge problem for the ozone layer, but now HFC's
are a problem for the climate.
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CHLOROFLUOROCARBONS-Problems
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WORLD PRODUCTION CHLOROFLUOROCARBONS
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When do we send greenhouse gases into
the Air?Whenever we……
• Watch TV• Use the AC• Turn on a light• Play video games• Listen to stereo• Wash/Dry clothes• Use hair dryer• Ride in a car• Use a dish washer• Microwave a meal
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Main sources of GHG due to human activities
Burning of fossil fuels Deforestation Live stock, paddy, wetland changes
(Methane) Use of chlorofluorocarbons (CFCs)
(In refrigeration systems) Agricultural activities (fertilizers) – nitrous
oxide concentration
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Green house effect It is important Responsible for warming of earth Warm enough for human living If effect is more? Problems for Humans, plants and animals
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Diagram to help explain the how greenhouse gases create the "greenhouse effect"
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Importance of greenhouse effect Present temperature of the earth - 57ºF
(14ºC). If there is no green house effect –
temperature would be 0ºF (-18ºC)
Can we live?
Can other organisms thrive?
Greenhouse effect is required also.
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Greenhouse gases (Specifically CO2) in pre-industrial and post-industrial periods
By the end of the 21st century = 490 – 1260 ppm
Pre-industrial period Post-industrial period
About 280 parts per million by volume (ppmv)
370 ppmv
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Atmospheric life time and GWP of greenhouse gases
Sl.No GHG Atmospheric Lifetime (yrs.)
Global warming Potential (GWP)
1 CO2 200 -450
2 Methane 12 + 3 62 (over 20 yrs.)
3 Nitrous oxide 120 296 over 100 yrs.
4 CFC – 12 100 10,600
5 HCFC – 22 12.1 5,700
6 Tetra fluromethane 50,000 5,700
7 Sulphur hexafluoride 3,200 22,000
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CO2 A colorless, odorless non-flammable gas
Most important Greenhouse gas in earth’s atmosphere
Recycled through the atmosphere by photosynthesis
Human and over 30 billion tons of CO2 anually in the atmosphere by the above process
CO2 emission into the air due to Humans exhale Burning of fossil fuel Deforest the planet
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Seven Sources of CO2 due to fossil fuel combustion
Solid fuels (eg. Coal) – 35% Liquid fuels (eg. Petrol) – 36% Gaseous fuels (eg. Natural gas) – 20% Flaring gas industrially and at walls - <1% Cement production – 3% Non fuel hydrocarbons - <1% International bunkers of shipping and air
transport – 4%
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Burning fossil fuels for driving
Burning fossil fuels for flying
Burning fossil fuels for sailing
Burning fossil fuels for Electricity
Burning fossil fuels for Heating
Burning fossil fuels for cooling
Burning fossil fuels for cooking
CO2 Release into the Atmosphere
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CO2 Production and Utilization
Release of CO2 by average American/yr. – 30,000 pounds(Through personal transportation and home energy needs)
Utilization of CO2 by single tropical tree over its life time – 2,000 pounds(@ 50 pounds /yr. over 40 years)
Trees must be planted at the rate of 15/person to offset CO2 release
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Methane Often called swamp gas Colourless, odorless, flammable gas Formed when plants decay, while air is very little Often called swamp gas Abundant in swampy areas Bacterial breaking of organic matter in wetlands Bacteria found in livestock produce naturally Annually 350 – 500 million tons of methane is added to the
atmosphere (due to livestock - cows, sheep, goats, buffalos, camels and also terminates), coal mining, drilling for oil, rice cultivation etc.,)
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Nitrous oxide Colourless greenhouse gas Has a sweet odor Used as an anesthetic (Deadens pain) Known as laughing gas Released naturally from oceans and soil bacteria Risen more than 15% since 1750 Annual addition to the atmosphere is 7-13 million
tons (due to fertilizer application, disposal of human and animal waste, automobile exhaust, etc.,)
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Fluorocarbons A term for a group of synthetic organic
compounds, containing fluorine and carbon Can be easily converted from gas to liquid
and liquid to gas Because of this, fluorocarbons can be used
in aerosol cans, refrigerators and air conditioners.
They do harm to the atmosphere Banned for production in the US
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Hydrofluorocarbons (HFCs) Do not harm or breakdown the ozone
molecule But trap heat in the atmosphere Used in air-conditioners
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1996 PROCESSES CARBON DIOXIDE WAS PRODUCED
Country (region) OIL Natural Gas Coal
World 44.7% 18.4% 36.9%
Canada 51.8% 30% 18.2%
United States 45% 21.3% 33.7%
European Union 56.2% 19% 24.8%
China 17.4% 1.1% 81.5%
Japan 64.6% 9.9% 25.5%
This chart shows what percentage of CO2 comes from Oil, Natural Gas, and Coal. For example, in 1996, 44.7% of the world's CO2 emissions came from the combustion of oil
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IMPACTS.. ?
!!!
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What Effect Do Greenhouse Gases Have on Climate Change?
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Effects of Global Effects of Global WarmingWarming
AttributedAttributed
• Glacier retreatGlacier retreat
• Ice shelf disruptionIce shelf disruption
• Sea level riseSea level rise
• Change in rainfall patternChange in rainfall pattern
• Frequent extreme weather Frequent extreme weather eventsevents
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Expected effects:
Water scarcity Increased precipitation Changes in mountain snow pack Adverse health effects Increasing deaths Displacements Economic losses
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Additional anticipated effects:
Sea level rises of 110 to 770mm (0.36-2.5ft) between 1990 – 2100.
Repercussions to agriculture. Slowing of thermocline circulation. Reduction in ozone layer Increased intensity and frequency of hurricanes. Extreme weather events. Lowering of ocean pH. Spreading of diseases such as malaria and dengue
fever. 18-35% samples-animal and plant species would be
extinct by 2050.
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×
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EFFECTS OF GLOBAL WARMING ON ENVIRONMENT
1.Glaciers and polar ice caps melting.
2.Floods & droughts becoming more.
3. Increasing sea levels ( 4-10 inches since 1990).
4.We might get 2 feet sea rise by 2100.
5.Freshwater salinity will increase.
6.Coastal lands will be immersed.
7.Warmer water and increased humidity will encourage tropical cyclones.
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ENVIRONMENTAL HEALTH
CO2, a global pollutant does not adversely impact the local environment – common
belief
Many problems are due to Co2 related pollutants
a) Toxic organic micro pollutants:Respiratory problems
Asthma attacks
premature death
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b) Sulphur oxides:Acid rain
Smog
c) Carbon monoxide:Inabilty of blood to carry O2
Affects healthNeurological impairmentheart problemsLung problems
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d) Nitrogen oxides:Lung damageRespiratory disorders(Also acid rain and smog)
e) Arsenic:Highly toxicCarsinogenic
f) Benzene: Highly toxicCarsinogenicDisrupts reproductive & Neurological systemsCauses anaemia
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g) Mercury:Highly toxicAffects child developmentImpairs brain function
h) Lead:Highly toxicMore so to childrenNeurological toxicant
i) Ozone:Lung damageRespiratory impairment
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j) Polycyclic organic matter:CarcinogenicRespiratory toxicant
k) Formaldehyde:CarcinogenRespiratory impairmentAsthma inducementNeurological toxicant
l) 1, 3- Butadiene CarcinogenRespiratory impairmentCardio vascular disease
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EFFECTS OF GLOBAL WARMING ON ENVIRONMENT
FLOODING
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Typhoon
Droughts
EFFECTS OF GLOBAL WARMING ON ENVIRONMENT
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EFFECTS OF GLOBAL WARMING ON SOCIETY
Food production
1.Global warming – Good for human race
2.Helps in improving food production.
3.Climate – Determinant factor in Agriculture.
4.Warming – better than cooling for food production.
5.CO2 - essential nutrient for food production.
6.Food – the most important resource for our life.
7.Temperature rise – more land for agriculture (towards poles) - Longer
growing season.
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ADVERSE IMPACTS ON HUMAN HEALTH1. Loss of life
2. Insects and other pests migrate towards earth’s pole.
3. They migrate up to 550 km (or 550 miles).
4. Some insects carry diseases- like malaria and dengue fever.
5. Thus diseases increase & spread leading to a 50 – 80 million additional malaria cases annually – 10 – 15% increase.
6. Heat itself has effect on health.
7. Heat waves - heart stroke, heart attacks
8. July 1995 heat wave in Chicago- killed 700 people.
9. Hot conditions cause smoke particles and noxious gases-linger in air-accelerate chemical reactions & generate other pollutants- result in bronchitis and asthma.
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ADVERSE IMPACTS ON HUMAN HEALTH -CONTD
Oceans become warm and expand – result in sea level rising.
Coastal people have to move away.
Bangladesh – cannot build a coastal wall.
Maldive islands (1190 islands) – Avg height – 1.5 mts above sea level – more than 2,00,000 people will have to abandon their homes.
Ocean warming – promote toxic algae – red tide – fish mass kill – birds kill – cholera etc..
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IMPACT ON FISHERIES
1.Fisheries are directly and strongly affected by variations in the natural conditions.
2. Habitat conditions decide the productivity and location of fish stocks (migration).
3. Fish are more sensitive to temperature than many animals because they cannot maintain a constant body temperature.
4. Different fish species live in different temperature zones and they are accordingly adapted.
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IMPACT ON FISHERIES - CONTD
5. Fish need more food and more oxygen when temperature increases.
6. Rainbow trout grow significantly more slowly when temperature rises by 2o C and food is limited.
7. A warming of 3o C will double the food requirement of Arctic trout.
8. Dissolved oxygen and temperature are negatively related and hence in high temperature (global warming) oxygen will be insufficient.
9. Even 1- 2oC rise may cause mass mortality.
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IMPACT ON FISHERIES - CONTD
10. Warm water fishes mature more quickly – 90% of such fish species are small in size than those in cooler waters.
11. Rise in temperature leads to less fish off springs.
12. Some may not be able to reproduce at all.
13. Tropical Guppies produce smaller broods.
14. Grass carp ovulate less frequently in warmer waters.
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IMPACT ON FISHERIES - CONTD15. Temperate species like Salmon and
Sturgeon cannot spawn at all, if winter temperatures do not drop below a certain level.
16. Global warming has drastically brought down, the fishery of the much preferred quality fish Lactarius lactarius.
17. When the water temperature increases, fish head out to cooler water areas.
18.When fish in the Gulf of Alaska moved deep in 1993, 1,22,000 sea birds starved to death.
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IMPACT ON FISHERIES - CONTD
19. As water warms up, many microbes and parasites grow faster and become more virulent.
20. Fish species suffer heavily due to diseases.
21. Due to temperature increase (supported by nutrients) algal blooms (including red tides) occur and mass mortality of marine organisms occur either due to production of toxin or reduction of oxygen.
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IMPACT ON FISHERIES - CONTD
22. Increased warming has led to the extinction of 20 species which are found nowhere in the world.
23. Global warming has resulted in coral bleaching and the loss of symbiotic bacteria that corals depend upon.
25. Events like the 1972-73 El Nino has put off 1500 boats, 200 processing plants and 1,00,000 people out of work in the Peruvian Anchoveta fishery.
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MITIGATION
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Save Agriculture
Protect farmers
Produce your foods
Avoid/ Reduce imports and transports
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GLOBALIZATION….
Exports and Imports
Required…? To what extent?
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PAINTING HOUSES
No oil paints
Latex paints…. May be O.K
NO VAASTU
NO VASSTU COLOURS
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HAVE ECO FRIENDLY HOUSES
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USE ENERGY EFFICIENT ELECTRICAL APPLIANCES
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NO OLD TYPE BULBS
USE CFL BULBS
ALSO ULTRA COMPACT LEDS- LIGHTS
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USE TWO WHEELERS
ELECTRIC SCOOTERS
AND BICYCLES
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IS NOT WALKING BETTER?
TO CONTROL.. BLOOD SUGAR
BLOOD PRESSURE
FAT DEPOSITION
AND OVER WEIGHT
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FOR LONG JOURNEYS
PUBLIC TRANSPORT
TRAIN
REDUCE PERSONAL VEHICLES
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HOW MANY CARS IN A HOUSE?
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IS THIS CONGESTION REQUIRED?
HOW MUCH RELEASE OF CO2
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GENERATE WIND POWER
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SOLUTIONS FOR PRODUCING "CLEANER"ENERGY
Hydro Power plant on a river
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PRODUCE SOLAR ENERGY
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SUBJECT TO SAFETY
HAVE NUCLEAR POWER PLANTS
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Geothermal power plant
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CREATE AWARENESS
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LET THERE BE GREENERY -
EVERYWHERE
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PRODUCE ALGAL DIESEL
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Nanochloropsis
Nitzschia
Bacteriococcus
FROM HIGH FAT ALGAE
Scenedemus – 16 – 40%
Neochloris – 35 – 65%
Nitzschia – 45 – 47%
Isochrysis – 25 – 33%
Nanochloropsis – 31 – 60%
Bacteriococcus – 25 – 75%
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CULTURE METHODS
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UTILIZE MARINE ALGAE
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CULTURE SEAWEEDS
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A«óC«ôKò£ â´Lv(Gracilaria edulis)
ªüL®ªò™ô£ ÜC«ó£ê£(Gelidiella acerosa)
è£ô˜Šð£(Caulerpa)
ê˜è£ú‹ ªõŒ®(Sargassum wighti)
èŠð£ç¬ð‚èv Ü™õªóC(Kappaphycus alvarezii)
ì˜H«ùKò£ èù£Œìv(Turbinaria canoides)
CULTIVABLE INDIAN SEAWEEDS
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RAFT CULTURE
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MONOLINE CULTURE
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Jatropha
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Jatropha curcas
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GROW BAMBOO, SIMILAR ONES AND GET CARBON CREDIT
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Seven steps to curb global warmingSeven steps to curb global warming
1. Global carbon pricing1. Global carbon pricing2. Global satellite monitoring of GHG emissions2. Global satellite monitoring of GHG emissions3. Compensating developing countries for preserving 3. Compensating developing countries for preserving
rainforestrainforest4. Creation of a global market for responsible biofuel4. Creation of a global market for responsible biofuel5. Creation and furtherance of markets for renewable 5. Creation and furtherance of markets for renewable
electricityelectricity6. Global moratorium on building new coal-fired power 6. Global moratorium on building new coal-fired power
stationsstations7. Creation of global incentives for developing countries7. Creation of global incentives for developing countries
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Solution for Global Warming
Reduce use of fossil fuel Protect rainforests as “Carbon store houses” Plant tropical trees and compensate
rainforests being lost Develop Plantations for biodiesel production
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Global WarmingGlobal Warming
IsIs
GLOBAL WARNINGGLOBAL WARNING
Avoid Pollution,Avoid Pollution,
Protect Nature,Protect Nature,
Promote Plantation,Promote Plantation,
and and
Use BiodieselUse Biodiesel
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“Energy Independence is the lifeline of a nation”
BIO-DIESEL MISSION
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CONTACT FOR CONSULTANCY
PROJECTS..
Aquaculture,
environment,
water treatment
Aquariums AND
Project monitoring
Dr.V.Sundararaj – 09380657117
Dr.D.Yuvaraj - 09944099550Asian Analytical Laboratories Pvt Ltd,
4/2, Bharathiar St, Palavakkam, Chennai- 600041,Ph; 044 32560686
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THANK YOU