The document discusses the greenhouse effect and related topics in three paragraphs: 1) It defines the greenhouse effect as a phenomenon that helps keep the Earth warm enough to support life. It was first postulated in 1896 and carbon dioxide levels have increased 25% in recent years. 2) Greenhouse gases like carbon dioxide, methane, nitrous oxide and water vapor trap heat in the lower atmosphere like glass. Increased production of these gases from human activities is enhancing the greenhouse effect and causing global warming. 3) The impacts of the enhanced greenhouse effect include rising temperatures, sea levels and extreme weather. Control measures involve reducing greenhouse gas emissions through energy conservation, renewable energy, and international cooperation.

1. Green House Effect
 DEFINITION:
“ It’s a phenomenon which helps to keep the earth
warm enough for existence of life on it”
 INRODUCTION:
 First postulated by a Swedish chemist in 1896
 In recent years it was found that Carbon dioxide
has increased by 25 %

2. Contnd………
 Stratosphere: a thin layer of certain gases in the
lower atmosphere at an average height of 30 Km.
from the surface of earth
 This layer acts like a glass of Green House
 Venus has CO2 60,000 times in its atmosphere
than earth and has a corresponding average
temperature of 850 F
 Mars has no CO2 and its average temperature is
24 F

3. Atmosphere: ( Layers )
 GEOSPHERE / EARTH
 TROPOSHERE………..First 08 miles
Concerned with weather formation, temperature
changes and air movements, Temp. falls with
ascent at a rate of 1 F for every 100 meters
 TROPOPAUSE…………Next 10 miles
There is no fall of temperature with ascent
 STRATOSPHERE………Next 40 miles
 Its lower portion is Ozone layer

4. Contnd………
 IONOSPHERE……….Next 220 Miles
 Contains charged particles or Ions in it
 Has two layers (upper & lower)
 Lower layer reflects radio-waves back to
the earth & makes long range broadcastings
possible

5. Contnd…….
 VACUUM…………Next all space
 INTERPLANETARY SPACE……Starts
at 10,000 miles from earth
 GREEN HOUSE LAYERS……..First 25
miles from Earth
 BIOSHERE……Part of the earth, its
waters & atmosphere where organisms can
live

6. Analysis of Green House Gases
 There are 40 gases which affect the Green House but
important gases include:
1. CO2 : It is produced by :
 Volcanoes
 Decaying Plants
 Breathing
 Burning of Organic matter
It is fixed by :
 Photosynthesis by plants
 Absorption by the Sea

7. Contnd…….
2. METHANE :
20 % more capacity to trap heat as compared to
CO2 , It is produced by
 Decomposition of Organic matter
 Termites
 Swamps
 Cattle Farms
 Cattle gut

8. Contnd…….
3. NITROUS OXIDE :
Produced by :
 Land clearance for Agriculture
 Use of Fertilizers
 Combustion of fossil fuel

9. Contnd…….
4. SO2 : It is mainly produces by Industries
5. CFC (Man made Gas):
 Used in Aerosol spray
 Refrigerators
 Insulating Foams
6. CO:
7. Water Vapours:

10. Causes of Global Green
House Effect
1. INCRESED PRODUCTION OF CO2
DUE TO :
• Population Explosion
• Rapid Industrialization
• Increased Agricultural activities
• Burning of Fossil fuels
• Cutting of Forests

11. Causes Contnd…..
2. INCREASED PRODUCTION OF
METHANE DUE TO :
• Increased Agricultural activities
• Natural gas burning
• Decomposition of Organic matter
• Bacterial activities in the gut of cattle
• Termite

12. Causes Contnd…..
3. INCREASED PRODUCTION OF
NITROUSE OXIDE DUE TO :
• Land clearance
• Use of Fertilizers
• Fossil Fuel burning
4. DEFORESTATION :

13. Influences of Global Green
House Effect
1. Rise in temperature (3-9 F)
2. Rise in Oceans level (3-5 ft.)
3. Floods
4. Extremes of Wheather
5. Climatic changes in Tropics & Subtropics

14. Effects of Ozone Depletion
1. Sun Burns
2. Skin Cancer
3. Cataract
4. Weakening of Immune System

15. Acid Rain
 Produced due to invisible clouds of Sulpher and
Nitrogen Oxides
 SOURCES :
1. Burning of Fossil fuels
2. Coal burning
3. Smoking
4. Factories
5. Motor Vehicles exhaust

16. Acid Rain Contnd…..
 CHEMICAL REACTION :
 SO2 & NO2 are converted to H2SO4 & HNO3
 EFFECTS OF ACID RAIN :
1. Killing of Marine life
2. Destruction of Nutrients in subsoil
3. Erosion of buildings & metals
4. Damage of Crops
5. Contamination of drinking water

17. Control Measures of Global
Green House Effect
 Energy conservation
 Rising the cost of fuels
 Developing new energy systems
 Forest protection / Reforestation
 Recovery of Methane from garbage
 Banning of CFC production
 International Conferences
 National Standards of Pollutants
 Anti Pollution measures

18. Sustainable Development
 DEFINITION :
It is the continuous development (in
environment) today that will not
compromise the well being of the future
generations
Development should continue to give food,
shelter & other provisions to every body but
not at the expense of Environment

19. Measures to attain
Sustainable Development
 AT PERSONAL LEVEL
 AT NATIONAL LEVEL
 AT INTERNATIONAL LEVEL