Question

Which of the following is a source of chemical weathering that has been exacerbated by air pollution from industrial plants and car emissions?
A. acid rain
B. oxidation of iron
C. formation of clay
D. dissolving of limestone

Answer 1

I would say acid rain. It makes the most sense because the emissions coming out go up into the clouds; the clouds then absorb the impurities and release them back to the earth in the form of rain/snow.