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: if a pine falls then sunlight becomes available to the surrounding plants. 
Question: what provides more sunlight to surrounding plants by falling?
[EX A]: pine.

[EX Q]: Fact: bottom dwelling organisms can be filter feeders. 
Question: What can bottom dwelling organisms be?
[EX A]: filter feeders.

[EX Q]: Fact: heating salt water causes the water to change into a gas while the salt remains. 
Question: Heating salt water causes the water to do what while the salt remains?
[EX A]:
change into a gas.