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: Beavers cause ponds and lakes to form. 
Question: What can be the cause of lakes and ponds forming?
answer:
beavers.


question:
Fact: Roots grow away from a light source. 
Question: what grow away from a light source?
answer:
roots.


question:
Fact: Male mealybugs have two pairs of wings for flight. 
Question: What does two pairs of wings help the male mealybug do?
answer:

Fly.