Question

Acid rain occurs when sulfur dioxide in the atmosphere is oxidized in the presence of nitrogen dioxide. Acid rain is an example of _______.
a.
a primary pollutant
b.
a secondary pollutant
c.
a tertiary pollutant
d.
none of the above


Please select the best answer from the choices provided

A
B
C
D

Answer 1

B

Acid rain is a secondary pollutant — it forms in the atmosphere from chemical reactions of primary pollutants (e.g., SO2 and NOx).