Acid rain is caused by human pollution. Why is Canada concerned about acid rain?
A. Acid rain is only a problem in Canada.
BAcid rain hurts plants, forests, and air quality.
CAcid rain melts everything and ruins cities.
DAcid rain helps plants and forests grow faster.
A. Acid rain is only a problem in Canada.
BAcid rain hurts plants, forests, and air quality.
CAcid rain melts everything and ruins cities.
DAcid rain helps plants and forests grow faster.