Certain pollutants that enter the atmosphere directly, such as from smokestacks and tail pipes, are called ____.
A)criteria pollutants
B)noxious pollutants
C)primary air pollutants
D)secondary air pollutants
E)reactive pollutants

Question

Quizplus · Accepted Answer

Primary air pollutants are those that are emitted directly into the atmosphere from sources such as smokestacks and tailpipes. These pollutants enter the air in the form they were emitted, unlike secondary pollutants, which form in the atmosphere through chemical reactions.

Certain Pollutants That Enter the Atmosphere Directly, Such as from Smokestacks