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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
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5 votes
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

User Udara Kasun
by
7.2k points

2 Answers

1 vote
Has to be at most 20
User Mikayla
by
8.1k points
2 votes
20 time more then when it’s warm
User Hans Olsson
by
8.3k points
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