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

Question 52

Multiple Choice

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.

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