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.

[Q]: Fact: animals cannot make their own food. 
Question: What cannot make their own food?
[A]: animals.


[Q]: Fact: The continents drifting causes earthquakes. 
Question: What causes earthquakes?
[A]: Continents drifting.


[Q]: Fact: Ice forming and expanding in soil allows water to easily flow through that soil. 
Question: Water can flow easily through soil where what has formed and expanded?
[A]:
ice.