Multiple Choice
Marine upwelling zones are important because
A) they help scientists measure the chemistry of deep ocean water.
B) they bring to the surface organisms that are difficult to observe elsewhere.
C) ships can sail faster in these zones.
D) they increase marine productivity by bringing nutrients back to surface ocean waters.
E) they bring oxygenated water to the surface.
Correct Answer:

Verified
Correct Answer:
Verified
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