Answer:
C cascading effect
Explanation:
i checked all the options of A B C D
Answer:
Zooplankton - Animals (mostly microscopic) which drift freely in the water column.
Explanation: Zooplankton, small floating or weakly swimming organisms that drift with water currents and, with phytoplankton, make up the planktonic food supply upon which almost all oceanic organisms are ultimately dependent.
Hope this helped!!
D is the answer to the question
I am pretty sure it is CD4 cell
