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: barometric pressure makes clear weather. 
Question: What causes clear weather?
[A]: barometric pressure.


[Q]: Fact: small capillaries collect fluid. 
Question: What collects fluid?
[A]: small capillaries.


[Q]: Fact: Thyroid hormones increase the rate of heat production in cells. 
Question: Thyroid hormones increase the rate of what in cells?
[A]:
heat production.