Why Are the North Atlantic, North Pacific, and Antarctic Waters

question 32

Multiple Choice

Why are the North Atlantic, North Pacific, and Antarctic waters the most productive?

• A) Phytoplankton grow there because they do not like direct sunlight.
• B) Cold water holds the most dissolved oxygen and can therefore support greater numbers of phytoplankton.
• C) The melt waters of the nearby ice have nutrients that are released in high quantities, fertilizing the phytoplankton.
• D) Those waters are the most violently mixed, bringing up nutrients from the depths of the ocean.

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