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: 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: AIDS infects and destroys helper T cells. 
Question: what infects and destroys helper T cells?

Answer: AIDS.


Question: Fact: Sponges trap and filter out food as water passes by. 
Question: What eats by trapping and filtering out food as water passes by?

Answer:
Sponges.