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: bottom dwelling organisms can be filter feeders. 
Question: What can bottom dwelling organisms be?

SOLUTION: filter feeders.

PROBLEM: Fact: Melanin amount is a polygenic trait. 
Question: what is a polygenic trait?

SOLUTION: melanin amount.

PROBLEM: Fact: free-living and generally unicellular cells convert chemical energy into electrical energy. 
Question: What cells convert chemical energy to electrical energy?

SOLUTION:
free living and unicellular.