Endemism is the ecological state of being unique to a place. Endemic species are not naturally found elsewhere. The place must be a discrete geographical unit, such as an island, habitat type, or other defined area or zone.
endemism A state in which species are restricted to a single region. endemnicity Amount or severity of a disease in a particular geographic area. endergonic Used in reference to a chemical reaction that requires energy; energy absorbing.
If you use that term, it is meant to be a center of endemism, of high biological diversity, of a lot of species that aren't found anywhere else, and it's also an area that is under great threat. It needs to have all three of those characteristics.
See also: Action, Ecosystem, Organ, Extinction, Habitat
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