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: roundworms may be free-living or live off a host. 
Question: aside from free-living, where else can roundworms exist?
answer:
live off a host.


question:
Fact: you should look at the sun too long or you will impact your eyes negatively. 
Question: What does looking at the sun do?
answer:
Damages eyes.


question:
Fact: cascades of electrons can cause forest fires. 
Question: what can cause forest fires?
answer:

cascades of electrons.