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: food can cause illness. 
Question: What is a source of  illness?

A: food.
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Q: Fact: bottom dwelling organisms can be filter feeders. 
Question: What can bottom dwelling organisms be?

A: filter feeders.
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Q: Fact: Heat sinks are designed to be cooler than the objects they're in contact with. 
Question: What is an example of an object designed to be cool?

A:
heat sink.
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