The Earth's Atmosphere (What it is made up of and air pollutants)

The Earth's atmosphere is made up of:

Nitrogen - 78%

Oxygen - 21%

Other gases like Argon and Carbon Dioxide - 1% (Carbon Dioxide is 0.04%)

Air pollutants usually have a bad effect on the environment and people's health. The main ones are:

(SO2) Sulphur Dioxide - it causes acid rain.

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