Deep-water circulation brings dense, cold, oxygen-rich water from the surface to the deep ocean because of:
A)greater rates of photosynthesis in deep water.
B)greater dissolution of oxygen in colder water than warmer water.
C)increases in pH with depth.
D)decreases in pH with depth.
E)greater volcanic out-gassing at the ocean surface.

Question

Quizplus · Accepted Answer

Cold water can dissolve more oxygen than warm water, and therefore dense, cold water carries more oxygen than warm water.

Deep-Water Circulation Brings Dense, Cold, Oxygen-Rich Water from the Surface