Biology, asked by SHAILENDRA6765, 1 year ago

Great biodiversity in the tropics

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Answered by Tajeshsahu
2
it is best answer -



*.Its a biogeographic region with significant reservoirs of biodiversity thatis under threat from humans.
*.Norman Myers has given this concept in 1990.
*.To qualify as a biodiversity hot spot a region must meet two strict criteria:
*.it must contain at least 0.5% or 1,500 species ofvascular plants as endemics, and
*.it had lost at least 70% of its primary vegetation.
*.Around the world, 34 areas qualify under this definition, with nine other possible candidates.
*.These sites support nearly 60% of the world's plant, bird, mammal, reptile, and amphibian species, with a very high share of endemic species.
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