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: running requires a lot of calories. 
Question: What does the body use while running?
[A]: Calories.


[Q]: Fact: A fiber found only in mammals grows from a bulb under the skin. 
Question: A fiber found only in mammals grows from a bulb under what?
[A]: the skin.


[Q]: Fact: An aquatic animal requires great amounts of water to use their gills to extract the dissolved oxygen. 
Question: What requires great amounts of water to use their gills to extract dissolved oxygen?
[A]:
aquatic animals.