Green algea - a phytoplankton type,it contains two forms of chlorophyll, Cyanobacteria - a phytoplankton type,they are the first organisms known to have produced oxygen., Diatom - a phytoplankton type,they settle to the bottom of the water column and accumulate in sediments, Photosynthesis - create oxygen and energy in the form of sugar, Dinoflagellate - some of produce toxins, marine photosynthesis - roughly half of the oxygen production on Earth comes from there, coccolithophores - each cell contains two brown chloroplasts which surround the nucleus, ecosystem - a geographic area where plants, animals, and other organisms work together to form a bubble of life , microscopic - so small as to be visible only with a microscope., food chain - group of organisms linked in order of the food they eat,

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