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.
--------
Question: Fact: small capillaries collect fluid. 
Question: What collects fluid?

Answer: small capillaries.


Question: Fact: diet is an adaptation. 
Question: What is an adaptation?

Answer: diet.


Question: Fact: Limestone is formed by deposition. 
Question: How is limestone formed?

Answer:
Deposition.