posted by Astrid .
How does the process of upwelling affect the distribution of life in the ocean?
A.It keeps the salinity of the ocean constant.
B.It replaces polluted water near shore with clean water.
C.It replaces nutrient-depleted waters with nutrient-rich waters.
D.It carries energy-rich warm water to the upper zones of the ocean.
I think it's either C or D.......