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: heating salt water leaves the salt on the surface. 
Question: heating salt water leaves the salt where?
[EX A]: on the surface.

[EX Q]: Fact: A prism is used to split light into colors. 
Question: What does a prism split light into?
[EX A]: colors.

[EX Q]: Fact: erosion is when rocks are broken down mechanically. 
Question: What is it called when rocks are broken down mechanically?
[EX A]:
erosion.