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: lightning ignites fires. 
Question: what can lightning ignite?
answer:
fires.


question:
Fact: Most aquatic organisms do not have to deal with extremes of temperature or wetness. 
Question: What kind of creatures don't usually have to deal with extreme temperatures or wetness?
answer:
aquatic organisms.


question:
Fact: Food can be cooked on metal. 
Question: Which surface can food be cooked on?
answer:

Metal.