The atmosphere, climate, etc, the answer could be a great number of things, it isn't just one specific answer.
Perhaps there is a set of vocab that you can choose from? If so, then please list it.
Your answer would most likely be letter
B. Biosphere
Answer:
I believe the answer is A because if shrimp eat phytoplankton, and squid eat shrimp this should work. I am not positive but I hope this helps.
The answer to the question is that it is