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: living things cannot survive without oxygen. 
Question: what cannot survive without oxygen?
[EX A]: living things.

[EX Q]: Fact: the functions of life require energy. 
Question: What is energy required for?
[EX A]: The functions of life.

[EX Q]: Fact: fault movement in the crust is responsible for earthquakes. 
Question: what are responsible for earthquakes?
[EX A]:
fault movement.