Which organism oils most likely be the main source of oxygen in a forest ecosystem

Phytoplankton

Phytoplankton are the main organisms responsible for oceanic photosynthesis. These one-celled plants obtain most of their carbon dioxide not from the air but from the depths of the ocean. Much of the oxygen they produce eventually makes its way into the atmosphere, however

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1. a tropical dry forest carries out more rapid nutrient cycling

bc blah

explanation:

bc blah