Question

Phytoplankton play an important role in which of the following biogeochemical cycles?
the nitrogen cycle
the phosphorus cycle
the carbobon cycle

Answer 1

the phosphorus cycle

Answer 2

Phytoplankton plays an important role in the carbon cycle because phytoplankton obtains energy through the process of photosynthesis and must therefore live in the well-lit surface layer (termed the euphotic zone) of an ocean, sea, or lake.