Carbon monoxide is the primary air pollutant.
Primary air pollutants:
Pollutants which are formed and emitted directly from particular sources are Primary air pollutants.
Examples are particulates, carbon monoxide, nitrogen oxide, and sulfur oxide.
Secondary air pollutants:
Pollutants which are formed in the lower atmosphere by chemical reactions.
example : smog
refer https://brainly.com/question/23660027
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