Acid deposition is properly defined as the ____ deposition of ____ pollutants onto earth's surface.
a. wet; secondary
b. dry; secondary
c. wet and dry; primary
d. wet and dry; secondary
e. dry; primary
Answer: D
Acid deposition is properly defined as the ____ deposition of ____ pollutants onto earth's surface.
a. wet; secondary
b. dry; secondary
c. wet and dry; primary
d. wet and dry; secondary
e. dry; primary