Question

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4. write
how air is polluted
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Answer 1

Answer:

air is polluted by many particles directly or indirectly :

though factories - large amount of harmful gases produced contaminates natural air which cause certain problems like difficulty in breathing etc.

hope u gt crrct

Answer 2

Explanation:

Air pollution is caused by soil 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, valcanoes and wildfires. The solid and liquid particles suspended in our air are called aerosols