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This is a timed quiz please answer fast!

Which statement describes indoor air pollution?

Smog is a common source of indoor air pollution.
Ultrafine particles are classified as indoor air pollutants.
Indoor air pollution does not affect symptoms for people with asthma.
Chemicals from industrial power plants cause indoor air pollution.

1 Answer

5 votes

Answer:

Ultrafine particles are classified as indoor air pollutants.

That's the answer

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User Kaspersky
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