So that it can sustain different life that requires different environments. Angler fish, for example, require a dark and cold environment to thrive while tuna require a light and warm environment.
I Think The answer is a I hope it helps My friend
?????? What's even the question?
Answer:
<em>Involuntary </em><em>physiologic</em><em> </em><em>processes</em>
D. They both help organisms to move.