Tuesday, June 21, 2011

4.13 greenhouse gases



fossil fuels -co2/no2/so2
= greenhouse gases
= they absorb infrared light
burning fossil fuels are from factories, vehicles and burning of coals

farming
- cows emit methane gas which is about 9% of the atmospheric gas.

evaporation of water
- forming water vapour
- clouds

refrigeration/solvents
- cfc
--> chlorine carbon and fluorine
absorbtion of ultraviolet light

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