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To reduce auto emissions in the United States, modifications to automobile engines have been required since the 1960s. a) true b) false
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To reduce auto emissions in the United States, modifications to automobile engines have been required since the 1960s.

a) true
b) false

User Nitesh Malviya
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1 Answer

1 vote

Answer:

True

Step-by-step explanation:

User Jasamer
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