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: A compass is used to find magnetic north. 
Question: What does a compass find?

Answer: magnetic north.


Question: Fact: Female mammals have breasts. 
Question: What has breasts?

Answer: Female mammals.


Question: Fact: disease-causing microorganisms have a negative impact on the body. 
Question: What has a negative impact on the body?

Answer:
disease-causing microorganisms.