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.

[Q]: Fact: Hummingbirds co-evolved with plants. 
Question: Hummingbirds are what they are today as a necessary consequence of their relationship to what?
[A]: Plants.


[Q]: Fact: Heat energy makes digestion easier. 
Question: What does heat energy do?
[A]: makes digestion easier.


[Q]: Fact: rain causes nutrients to be available. 
Question: What causes nutrients to be available?
[A]:
water.