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: bears hibernate to conserve energy. 
Question: Why do bears hibernate?
answer:
conserve energy.


question:
Fact: The wind has a negative impact on the respiratory system. 
Question: The wind has a negative impact on what?
answer:
the respiratory system.


question:
Fact: A thing that is internal and vital make up the excretory system. 
Question: A thing that is what makes up the excretory system.?
answer:

vital.