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: Bioterrorism is the spread of pathogens. 
Question: What does bioterrorism spread?
answer:
Pathogens.


question:
Fact: Blood is a fluid tissue that delivers oxygen and nutrients to other tissues. 
Question: What delivers oxygen and nutrients to other tissues?
answer:
Blood.


question:
Fact: Cells that divide uncontrollably can be either benign or malignant. 
Question: How are cells that divide uncontrollably classified?
answer:

As benign or malignant.