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: bottom dwelling organisms can be filter feeders. 
Question: What can bottom dwelling organisms be?

A: filter feeders.
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Q: Fact: Coal is used to produce the movement of electrons by burning in coal-fire power stations. 
Question: Coal is used to produce the movement of electrons by what in coal-fire power stations?

A: burning.
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Q: Fact: water will runoff as springs to replenish ground water. 
Question: water will runoff as springs to replenish what?

A:
ground water.
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