Smog usually occurs most strongly under which conditions in summer?

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Multiple Choice

Smog usually occurs most strongly under which conditions in summer?

Photochemical smog forms when sunlight drives reactions between pollutants from combustion, especially nitrogen oxides and volatile organic compounds, producing ozone. Warm temperatures speed these reactions and, with calm, stagnant air, pollutants build up, leading to the strongest smog on sunny, hot summer days when emissions are high. Heavy rainfall washes pollutants from the air, snow reduces sunlight, and cold nights slow the chemical processes, all of which lessen smog, so they don’t produce the peak conditions.

Photochemical smog forms when sunlight drives reactions between pollutants from combustion, especially nitrogen oxides and volatile organic compounds, producing ozone. Warm temperatures speed these reactions and, with calm, stagnant air, pollutants build up, leading to the strongest smog on sunny, hot summer days when emissions are high. Heavy rainfall washes pollutants from the air, snow reduces sunlight, and cold nights slow the chemical processes, all of which lessen smog, so they don’t produce the peak conditions.

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