Write a correct answer to the given question based on its associated fact. Make sure that your answer is contained in the associated fact. Don't be creative and introduce any new word that is not mentioned in the associated fact! Remember that the associated fact has been rearranged to form the question. So, the correct answer words must lie within the associated fact. The correct answer can be a word, phrase, or even a sentence.

Q: Fact: Mammals can generate little bursts of energy by shivering. 
Question: What can a mammal produce by shivering?

A: energy.
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Q: Fact: Deep gorges are formed by flowing rivers through erosion over long periods of time. 
Question: What are formed by flowing rivers through erosion over long periods of time?

A: deep gorges.
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Q: Fact: Humans adjust their body temperature by sweating. 
Question: How do humans control their body temperature?

A:
Sweating.
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