Question

A microscopic single celled organism.​

Answer 1

Answer:

Microscopic organisms are tiny life forms, often consisting of a single cell. Protozoa — these are single celled animals also known as zooplankton (from the Greek, meaning drifting animals). ... Bacteria — the most abundant organisms on earth

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Answer 2

Answer:

Amoeba, Paramecium

Explanation:

Amoeba and Paramecium are single celled Microscopic organisms