instruction:
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.
question:
Fact: Population size influences the chances of going extinct. 
Question: what influences the chances of going extinct?
answer:
Population size.


question:
Fact: The ovaries are used in creating the young of a species. 
Question: What are used in creating the young of a species?
answer:
ovaries.


question:
Fact: imbalance of chemical messengers that control body functions can cause depression. 
Question: what happens to chemical messengers for them to cause depression?
answer:

imbalanced.