semaia
semaia
15-06-2018
Biology
contestada
When is ozone considered a pollutant
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heathertaylor5
heathertaylor5
15-06-2018
The layer closest to the Earth's surface is the troposphere. Here, ground-level or "bad" ozone
is an air
pollutant
that is harmful to breathe and it damages crops, trees and other vegetation. It is a main ingredient of urban smog.
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