Question

the primary pollutant causing photochemical smog
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Answer 1

Answer:

The two major primary pollutants, nitrogen oxides and VOCs, combine to change in sunlight in a series of chemical reactions, outlined below, to create what are known as secondary pollutants. The secondary pollutant that causes the most concern is the ozone that forms at ground level.

explanation:

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Answer 2

Answer:

The two major primary pollutants, nitrogen oxides and VOCs, combine to change in sunlight in a series of chemical reactions, outlined below, to create what are known as secondary pollutants. The secondary pollutant that causes the most concern is the ozone that forms at ground level.

Step-by-step explanation:

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