The definition of acid rain is _____.

A)polluted or caused to become impure
B)to put into action or force, as a law
C)having to do with a city or town
D)assigned to a particular purpose
E)rain that contains diluted acid; rain with a lower than normal pH

E) rain that contains diluted acid; rain with a lower than normal pH

The definition of acid rain is E) rain that contains diluted acid; rain with a lower than normal pH.