Excess of which of the above in the environment is/are cause(s) of acid rain?
A. 1, 2 and 3
B. 2 and 4 only
C. 4 only
D. 1, 3 and 4
Answer:B
Excess of which of the above in the environment is/are cause(s) of acid rain?
A. 1, 2 and 3 B. 2 and 4 only C. 4 only D. 1, 3 and 4