+A **microorganism** is a microscopic [organism](/wiki/organism), a tiny living entity often invisible to the naked eye. These ubiquitous forms of [life](/wiki/life) play crucial roles in nearly every ecosystem, shaping the world around us in profound ways.
+## See also
+- [Bacteria](/wiki/bacteria)
+- [Virus](/wiki/virus)
+- [Fungi](/wiki/fungi)
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