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