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: cats may compete for territory, water, food, or mates. 
Question: what may compete for territory, water, food, or mates?
[EX A]: cats.

[EX Q]: Fact: claws are used to catch arthropods by some predators. 
Question: what do predators use claws to catch?
[EX A]: arthropods.

[EX Q]: Fact: Cancer is a defect that occurs when there is no longer regulation of cycles. 
Question: cancer is a defect that occurs when there is no longer regulation of what?
[EX A]:
cycles.