Respuesta :

WorldlyGlass49
The function o the phytoplankton in ocean ecosystem is A. producer. Phytoplankton produce their own energy through a biological process or chemical reaction. They are a key factor of the aquatic biome.
The answer is A.

Phytoplankton play a key role in the earth's oceans, since they produce a huge amount of oxygen through photosynthesis. Most of the earth's production of oxygen is a result of phytoplankton. 

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