When you first start a car after it has been sitting for more than an hour, it pollutes up to ......times more than when the engine is warm. 10 2 20 5

2 answers
Question:

When you first start a car after it has been sitting for more than an hour, it pollutes up to ......times more than when the engine is warm.
10
2
20
5

Answers

20 time more then when it’s warm

Has to be at most 20

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