Question

Which of the following are natural causes 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
THE ANSWER WAS "A"

Answer 1

The answer would be a. All these things pollute the air, and evaporate into the air, so when rain falls, it is acid rain. :)