Usually acid rain refers to:
A. Precipitation with pH below 5.6
B. Precipitation with a pH higher than 5.6
C. Precipitation with a pH of 5.6
D. Precipitation with pH < 7
Answer:A
Usually acid rain refers to:
A. Precipitation with pH below 5.6 B. Precipitation with a pH higher than 5.6 C. Precipitation with a pH of 5.6 D. Precipitation with pH < 7