A) When the critical number of a species declines in forest due to parasitic attack
B) A species which is cosmopolitan and can be commonly found in a biosphere.
C) An endangered species which is found in a few restricted' areas on the Earth.
D) A species confined to a particular region and not found anywhere else.
Correct Answer: D
Solution :[d] 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.
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