1.

The correct set of species responsible for the photochemical smog is:

A. N2, NO2 and hydrocarbons
B. CO2, NO2, SO2 and hydrocarbons
C. NO, NO2, O3 and hydrocarbons
D. N2, O2, O3 and hydrocarbons
Answer» D. N2, O2, O3 and hydrocarbons


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