Question

what type of smog is often seen in urban areas due to secondary pollutants?
ozone depletion
photochemical smog
urban air pollution
acid rain formation

Explanation:

Photochemical smog is formed when primary pollutants (like nitrogen oxides and volatile organic compounds) react in the presence of sunlight to create secondary pollutants. Urban areas have high levels of these primary pollutants from vehicle emissions and industrial activities, making photochemical smog common there. Ozone depletion is about the thinning of the ozone layer (not smog in urban areas). Urban air pollution is a broad term. Acid rain formation is related to pollutants causing rain to be acidic (not a type of smog).

Answer:

B. photochemical smog