Which of the following are anthropogenic sources of acid rain?

A. volcano emissions, lightning, and microbial processes

B. industrial emissions and other man-made polluters

C. smokestacks and volcano emissions

D. microbial processes and fuel combustion

These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain. Sulfur dioxideand nitrogen oxides dissolve very easily in water and can be carried very far by the wind.