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: fungicides are toxic to humans and result in higher levels of UV radiation reaching Earth. 
Question: Higher levels of UV radiation can reach to earth by what means?

A: toxic human fungicides.
****
Q: Fact: Water can make soil from rocks. 
Question: What causes rocks to be worn into soil?

A: Water.
****
Q: Fact: ice wedging happens at varying rates. 
Question: What is the rate of ice wedging?

A:
it fluctuates.
****