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The automobile engine is the largest source of (blank) gas. a. Carbon Monoxide b. Carbon dioxide c. Sulfur dioxide d. Nitrogen dioxide
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The automobile engine is the largest source of (blank) gas.

a. Carbon Monoxide
b. Carbon dioxide
c. Sulfur dioxide
d. Nitrogen dioxide

User GarrickW
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5.0k points

2 Answers

3 votes
I think that it may be a. Carbon Monoxide
User Blackops
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I has to be d. Nitrogen Dioxide.
User Vsenko
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