Photochemical smog became prevalent with the advent of
A)coal burning stoves.
B)the industrial revolution.
C)smelting of ores.
D)widespread,deliberately set forest fires.
E)automobiles.

Question

Quizplus · Accepted Answer

Photochemical smog is primarily caused by the reaction of sunlight with pollutants from car exhaust, such as nitrogen oxides and volatile organic compounds. Therefore, the widespread use of automobiles is the major contributor to the prevalence of photochemical smog.

Photochemical Smog Became Prevalent with the Advent of