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.

Fact: skin is cooled by evaporation. 
Question: What cools the skin?
evaporation.

Fact: The genetic material responsible for heredity contains instructions for proteins. 
Question: The genetic material responsible for heredity contains what?
instructions for proteins.

Fact: A mutation in parent's sex cells can cause new traits to appear in a child. 
Question: A mutation in parent's sex cells can cause new traits to appear in a what?

child.