Question

3. Smog is a pollutant that can cause serious health

problems. Smog is most often seen over large
cities. Which of these substances is a main
ingredient of smog?

Answer 1

Smog is smoke and fog

Smog, the primary constituent of which is ground level ozone, is formed by a chemical reaction of carbon monoxide, nitrogen oxides, VOCs, and heat from sunlight.

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