Summer smog is caused primarily by:
Correct answer: C. Ozone
- A. PAN
- B. CO2
- C. Ozone
- D. NO2
Explanation
Summer smog, or photochemical smog, is a complex mixture of pollutants. The primary component and indicator of this type of smog is ground-level ozone (O3), which is formed by chemical reactions between oxides of nitrogen and volatile organic compounds in the presence of sunlight.
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