Multiple Choice Question
Sulfur and nitrogen compounds in the air can combine to form what type of pollution?
A.
ozone
B.
hay fever
C.
smog
D.
ammonia
1 answer
C. smog
Sulfur and nitrogen compounds in the air can combine to form what type of pollution?
A.
ozone
B.
hay fever
C.
smog
D.
ammonia
1 answer