Multiple choice

Which plankton is responsible 70% of the primary productivity near the ocean surface?

  1. phytoplankton

  2. ultra plankton

  3. zooplankton

  4. all of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phytoplankton are microscopic marine algae that form the base of the aquatic food web and contribute the vast majority of primary productivity near the ocean surface. Zooplankton are consumers, not producers.

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