Asked by No one special

Which abiotic factor is essential to all aquatic ecosystems excpet the ocean hydrothermal vents, and why?

a. phytoplankton, because it provides a source of food
b. salt, because it provides the necessary environment for organisms to move about
c. deep water, because it provides the necessary environment for organisms to move about
d. Sunlight, because it provides a source of energy***

Answers

Answered by Anonymous
I commented on your other post, but I guess I'll move here. I think D is right.
Answered by a friend
it's b
Answered by IDK
What is it
Answered by its - meh
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