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A major drawback of using fossil fuels as a source of energy is that they:

A.Release water as well as some energy.

B.Produce only a small amount of energy.

C.Release a greenhouse gas when burned.

D.Undergo a chemical reaction when burned.

User Mladen
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2 Answers

2 votes
Answer C

Explanation
User Cristian Almstrand
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4 votes
C. Release a greenhouse gas when burned
User Riyas Ac
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