what is biodiversity hotspot? why is India considered as a mega biodiversity hotspot? in about 150 words.

A biodiversity hotspot is a biogeographic region with significant levels of biodiversity that is threatened by human habitation. India is considered a mega diversity hotspot because of the large diversity of organism found here ranging from eastern to western ghats and North and South India too. Mainly western ghats are at high risk now

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answer; i believe that the correct answer is (the explosion of a nearby star(supernova);