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.

Fact: marine and benthic creatures lack respiratory and excretory systems. 
Question: what creatures lack respiratory and excretory systems?
marine and benthic.

Fact: heating salt water leaves the salt on the surface. 
Question: heating salt water leaves the salt where?
on the surface.

Fact: Feathers are highly probable in the evolution of a group of bipedal dinosaurs. 
Question: What are highly probable in the evolution of a group of bipedal dinosaurs?

feathers.