Cyanobacteria such as Trichodesmium play an important role in the oceans because they fix nitrogen gas.

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Cyanobacteria, including Trichodesmium, are known for their ability to convert atmospheric nitrogen gas into a form that can be used by other organisms in the ocean, a process known as nitrogen fixation. This is an important contribution to the marine ecosystem, as it helps to provide a source of this essential nutrient to other organisms.

Cyanobacteria Such as Trichodesmium Play an Important Role in the Oceans