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: Looseness of soil increases the odds of healthy roots. 
Question: Healthy roots can be due to what aspect of soil?
looseness.

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

Fact: a plant requires something that falls from clouds to grow. 
Question: What does a plant require to grow?

Something that falls from clouds.