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: most animals consume and are consumed by more than one species. 
Question: what consume and are consumed by more than one species?
[EX A]: animals.

[EX Q]: Fact: Mineral graphite can pierce the skin surface. 
Question: What can pierce the skin surface?
[EX A]: Mineral graphite.

[EX Q]: Fact: plants absorb light energy in order to produce oxygen. 
Question: plants absorb what to produce oxygen?
[EX A]:
light energy.