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: Power outages can cause a light bulb to go off. 
Question: What do power outages do to light bulbs?
answer:
turn them off.


question:
Fact: when individuals move into or out of a population, it's random. 
Question: what is it when individuals move into or out of a population?
answer:
random.


question:
Fact: mechanoreceptors sense differences in temperature or pain. 
Question: what senses differences in temperature or pain?
answer:

mechanoreceptors.