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The primary source of air pollution is: trash factories automobiles sewage treatment plants
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2 votes
The primary source of air pollution is:

trash
factories
automobiles
sewage treatment plants

User Stefo
by
8.2k points

1 Answer

7 votes
it would be Automobiles because automobiles produce gas which is a source of air pollution.
User Brianchirls
by
8.8k points
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