Environmental Chemistry: Atmosphere

troposphere

stratosphere

mesosphere

thermosphere

krypton

argon

hydrogen

helium

10 Km

12 Km

50 Km

80 Km

two

three

four

five

chlorofluorocarbons (CFCs)

methane

ozone

lead compounds

it is colorless

it is odourless

it is not an air pollutant

it does not cause breathing difficulties

Powerstations and industries using fossil fuels only

exhaust fumes of motor vehicles only

incomplete burning of wood

Powerstations & industries using fossil fuels and exhaust fumes of motor vehicles

0.99

0.8

0.5

0.25

it consumes all combustible materials

it is a clean process

it does not produce air pollution

it does not generate odor

troposphere

stratosphere

mesosphere

thermosphere