Microorganisms are also called microbes. Very tiny life forms such as bacteria, algae, diatoms, parasites, plankton, and fungi. Some can cause disease.
Other /More definition:
Microorganisms are Tiny living organisms that can be seen only with the aid of a microscope. Some Microorganisms can cause acute health problems when consumed in drinking water. Also known as microbes.
Other /More definition:
Microorganisms are Tiny living organisms that can be seen only with the aid of a microscope. Some Microorganisms can cause acute health problems when consumed in drinking water. Also known as microbes.
Other /More definition:
Microorganisms are the organisms such as Bacteria that are so small that it takes a microscope to see them.

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