Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Q: Atp or adenozine triphosphate is used for most energy functions in organisms.

A: What molecule is used for most energy functions in organisms?
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Q: Renewable energy sources emit fewer or no greenhouse gases.

A: What type energy sources emit fewer or no greenhouse gases?
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Q: Unsaturated fatty acids have bent chains.

A:
What type of chains do unsaturated fatty acids have?
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