Microorganisms are single cell- multi cell living creatures that you cannot see with the naked eye.
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ProtistsProtists don't fit in with anything else which is why it has its own kingdom. Protists move using cilliates which are small and hair-like. They also move using flagellas which are long and tail-like. The last way they move is psudepods, which also means "false feet" in greek, they pull themselves along. Some examples of protists are amoebas, paramecium, and euglenas.
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BacteriaBacteria are the smallest of all microorganisms. They come in three different shapes, spheres, rods, and spirals. Bacteria were among the first living things on earth. Bacteria live everywhere. They asexually reproduce which means when they grow big enough, they split. Bacteria is what causes diseases.
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