Phytoplankton Is Comprised of Photosynthetic Protists and Bacteria

question 10

Multiple Choice

Phytoplankton is comprised of photosynthetic protists and bacteria. For the most part, humans do not consume phytoplankton. Why, then, are they important to humans?

• A) They cause serious illness in humans.
• B) They are not important to humans.
• C) They are food for many marine organisms that humans eat.
• D) They release a lot of carbon dioxide into the atmosphere.

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