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Endemism

Endemism is the ecological state of a species being unique to a defined geographic location, such as an island, nation, country or other defined zone, or habitat type; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. The extreme opposite of endemism is cosmopolitan distribution. Another term for a species that is endemic is precinctive, which applies to species (and subspecific categories) that are restricted to a defined geographical area. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video