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: certain Steel products have a positive impact on the environment. 
Question: certain Steel products have a positive impact on what?
[A]: environment.


[Q]: Fact: Breathing provides one substance transported by the blood. 
Question: What process provides one substance transported by the blood?
[A]: breathing.


[Q]: Fact: carpooling leads to less pollution. 
Question: What does carpooling lead to?
[A]:
Less pollution.