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Q.
Total number of biodiversity hot spots in the world are
ManipalManipal 2012
Solution:
A biodiversity hot spot is biogeographic region with a significant reservoir of biodiversity that is threatened with destruction, high levels of species richness and high degree of endemism. Initially, $25$ biodiversity hotspots were identified but subsequently nine more have been added to the list, bringing the total number of biodiversity hotspots in the world to $34$.