+A **living organism** is any entity exhibiting the fundamental characteristics of [Life](/wiki/life), such as growth, reproduction, response to stimuli, and maintaining homeostasis. These complex systems are universally built upon the basic unit of a [Cell](/wiki/cell), harnessing energy to sustain their existence.
+## See also
+- [Biology](/wiki/biology)
+- [Ecology](/wiki/ecology)
+- [Evolution](/wiki/evolution)
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