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: force causes the speed of a crystal ball to increase. 
Question: What can force affect the speed of?

A: a crystal ball.
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Q: Fact: Mutations that lead to cancer usually occur in genes aiding in mitosis. 
Question: Mutations that lead to cancer usually effect genes that aid in what?

A: mitosis.
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Q: Fact: thirst is used to make chickens realize they need to replenish its bodily water. 
Question: what uses thirst to realize it needs to replenish its bodily water?

A:
chickens.
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