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Introduction to Environmental Issues

Any substance...

Question

Any substance in air that could, in high enough concentration, harm animals, humans, vegetation, and/or materials are called:

A

dust particles

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B

air pollutants

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C

impurity in air

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D

none of above

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Solution

The correct option is D air pollutants
Any substance in air that could, in high enough concentration, harm animals, humans, vegetation, and/or materials are called air pollutants. Examples are carbon monoxide, nitrogen dioxide etc.

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