175k views
5 votes
The primary source of air pollution is:

trash

factories

automobiles

sewage treatment plants

User Kingiol
by
7.1k points

2 Answers

1 vote
The answer is automobiles
User Johnnymnmonic
by
6.7k points
1 vote

Answer:

The Answer is Automobiles.

User Pendula
by
6.1k points