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Oxygen cycle
oxygen
phytpplakton gives us oxygen for us to breath.
plants, algae, and phytoplankton
It's part of the "Oxygen" cyclePhytoplankton dynamics in relation to the biogeochemical cycle of silicon in a coastal ecosystem of western Europe.
they produce oxygen in the oceans
you need oxygen to breath so that is how the nutrient cycle is important.
phytoplankton provide most of the oxygen to earth.
Since phytoplankton perform photosynthesis, and photosynthesis creates oxygen, I'd say oxygen.
Phytoplankton is what gives us as humans oxygen. Without it, we can`t live.
Photosynthesis.
Marine Phytoplankton. Contains over 70% of the world's oxygen.