TASK DEFINITION: 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.
PROBLEM: Fact: most animals consume and are consumed by more than one species. 
Question: what consume and are consumed by more than one species?

SOLUTION: animals.

PROBLEM: Fact: humans require energy for growth. 
Question: what requires energy for growth?

SOLUTION: humans.

PROBLEM: Fact: Cells secrete acids and bases to keep the proper pH for phosphatases to work properly. 
Question: What is needed from cells for phosphatases to keep the proper pH?

SOLUTION:
secretion of acids and bases.