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: mammals prevent death with the help of a diaphragm. 
Question: What do mammals use a diaphragm for?

Answer: Preventing death.


Question: Fact: incinerated mercury can cause the ph of soil to decrease. 
Question: what can cause the ph of soil to decrease?

Answer: incinerated mercury.


Question: Fact: sulfur dioxide has a negative impact on water quality. 
Question: What has a negative impact on water quality?

Answer:
Sulfur dioxide.