Question

What are some common characteristics of microscopic organisms living in the ocean?

Answer 1

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Answer 2

Microorganisms are very diverse. They can be single-celled or multicellular and include all bacteria and archaea and most protozoa, as well as some species of fungi, algae, and certain microscopic animals, such as rotifers. ... Marine microorganisms constitute more than 90% of the biomass in the sea.