Question

explain the different between pure air and polluted air

Answer 1

the air which do not consists of any pollutant is known as pure air
the air which consists of pollutants is known as polluted air

Answer 2

Air is mixture of gases :-

-Pure air contains 78% Nitrogen,21% Oxygen,and small but definite amount of carbon dioxide,argon,methane,water vapour,ozone etc.

-When the air is contaminated by unwanted substance which have a harmful effect on both living and non living thing it is called polluted air.

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