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5 votes
Which is an important source of carbon monoxide emissions that contributes to the greenhouse effect?

landfills


wetlands


vehicles


greenhouses

User TryingHard
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2 Answers

7 votes
It’s the vehicles because of the gas in the air and when the car is moving smoke and then it can cause pollution to the air and it would be bad
User Tomer Gal
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3 votes
It is vehicle.
Explanation- I don’t know lol
User Laxmikant Dange
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