Write the composition of air.How is it polluted
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Composition of air:
Nitrogen and oxygen are two gases which make up the bulk of the atmosphere. Carbon dioxide, helium,ozone, argon andhydrogen are foundin lesser quantities.Apart from thesegases, tiny dustparticles are alsopresent in the air.
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Air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires. The solid and liquid particles suspended in our air are called aerosols.
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