Oxygen, and lots of it.
They do this through the process of photosynthesis.
Using CO2, Sun Energy, and H2O are combined to make Glucose and Oxygen.
Oxygen.
Phytoplankton are photosynthetic organisms. They get their energy from sunlight.
sorry for that comment that was my friend
Phytoplankton.
Krill primarily consume phytoplankton and do not produce oxygen in a significant amount. The oxygen produced by marine organisms mainly comes from photosynthetic organisms like phytoplankton and seaweed.
Zooplankton. Phytoplankton are autotrophs, as they produce their own food through photosynthesis. Zooplankton are heterotrophs, relying on consuming other organisms, like phytoplankton, to obtain their energy.
Phytoplankton mainly produce oxygen as a byproduct of photosynthesis. They take in carbon dioxide and sunlight to produce glucose and oxygen. This process is crucial in maintaining the balance of gases in the atmosphere.
Some examples of what eat phytoplankton include sea stars, shrimp, snails, whales, small fish, zooplankton, and jellyfish.
Mainly they are algae.So they are photosynthetic
Amoebas use pseudopodia to engulf food, phytoplankton produce their own food, and G. lamblia is a parasite that feeds on a host.
Most clams that use a filter feeding system eat phytoplankton. Most phytoplankton are edible for clams, however there are some species that produce toxins that will kill clams.
Phytoplankton are the autotrophs that are the main producers for the upper layers of the ocean.This is because the upper layers of the ocean provide the most sunlight, which is what phytoplankton need in order to perform photosynthesis.
oxygen!!!!!! phytoplankton produces about 80% of the worlds oxygen! if they die we die!of course trees will back us up but there is not enough trees for the whole world to share oxygen. if the phytoplankton die, with trees, our death will slowly take effect! in days we will all be taking in shorter breaths and eventually die!