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.

Fact: The formation of more mitochondria increases a body's strength. 
Question: The formation of more mitochondia does what?
increases a body's strength.

Fact: Passenger pigeons could not produce enough offspring. 
Question: What could not produce enough offspring?
passenger pigeons.

Fact: Fungi are the only organisms that can decompose lumber. 
Question: Fungi are the only organism that can decompose what?

lumber.