AP Environmental Sciencemediummcq1 pt
Smog levels typically peak
A.in the mid-afternoon
B.at midnight
C.at sunrise before traffic
D.during rainstorms
Morning traffic emits precursors, and hours of strong sunlight are needed to cook them into ozone — hence afternoon peaks.
Ain the mid-afternoon
Practice more AP Environmental Science questions with full explanations
Practice Unit 7: Atmospheric Pollution Questions →