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: Evergreens are vascular plants that produce seeds in cones. 
Question: What are vascular plants that produce seeds in the form of cones?
evergreens.

Fact: expansion can cause fatigue. 
Question: what can cause fatigue?
expansion.

Fact: Nerve impulses are conducted via myelin. 
Question: How are nerve impulses conducted?

myelin.