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.

[EX Q]: Fact: Phenotypic expression of skin color varies over a wide range. 
Question: Phenotypic what of skin color varies over a wide range?
[EX A]: expression.

[EX Q]: Fact: Aging is associated with apoptosis. 
Question: What stage is associated with apoptosis?
[EX A]: aging.

[EX Q]: Fact: deposition of sediment at the mouth of a river by water fanning out is called by a Greek letter. 
Question: The deposition of sediment at the mouth of a river by water fanning out is called by what name?
[EX A]:
A Greek letter.