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: Heat is necessary for the survival of animals. 
Question: What is necessary for the survival of animals?

A: heat.
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Q: Fact: Hydrogen bonds cause H20 to expand when it freezes. 
Question: What causes H20 to expand when frozen?

A: hydrogen bonds.
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Q: Fact: Petals attract flies, wasps, and bees to the flower. 
Question: In order to attract flies, wasps, and bees, what does a flower employ?

A:
petals.
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