Question

The harmful substanes that that cause pollution of air, water and land are called
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Answer 1

Answer:

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Answer 2

Answer:

The substances which contaminate the air are called air pollutants. Sometimes, such substances may come from natural sources like smoke and dust arising from forest fires or volcanic eruptions. Pollutants are also added to the atmosphere by certain human activities. The sources of air pollutants are factories

Explanation:

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