Question

Nutrient-rich matter falling through the depths of the ocean is known as _____.

A. runoff
B. phytoplankton
C. marine snow
D. thermocline

Answer 1

C Marine snow explanation[

Answer 2

C ,marine snow

Step-by-step explanation:

Nutrients in the ocean are cycled by a process known as biological pumping, where plankton will extract the nutrients out of the surface water and combine them in their organic matrix.