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1 vote
Which gas makes up the largest amount of smog around cities?

A. sulfur oxides
B. carbon dioxide
C. carbon monoxide
D. nitrogen Oxides

2 Answers

4 votes

C. carbon monoxide you're welcome!!!

User Xinchao
by
8.1k points
4 votes
Carbon Monoxide, which is C, I put that and got it right.
User Haji
by
8.0k points
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