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Where are biodiversity hotspots normally...

Where are biodiversity hotspots normally located ? Why?

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(i) Hotspots are areas characterized with high concentration of endemic species experiencing unusual rapid rate of habitat modification loss. Norman Myers defined hot spots as "regions that harbour a great diversity of endemic species and at the same time, have been significantly impacted and altered by hyman activities".
(ii) A hotspot is a region that supports at least 1500 endemic vascular plant species (0.5% of the global total) has lost more than 70% of its original vegetation.
(iii) There are 35 biodiversity hotspots in the world. India is home to four biodiversity hotspots . They are:
(1) Himalaya: Entire Indian Himalayan region.
(2) Western Ghats
(3) Indo-Burma: Entire North-eastern India, except Assam and Andaman group of Islands (and Myanmar, Thailand, Vietnam, Laos, Cambodia and Southern China)
(4) Sundalands: Nicobargroup of Islands (and Indonesia, Malaysia, Singapore, Brunei, Philippines).
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