india holds unique biodiversity give reason subject:- s.s history
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Answer:
At the ecosystem level, India is also well-endowed, with ten distinct biogeographic zones. It also contains two of the world's 25 biodiversity hotspots, because of their extraordinarily high levels of species-richness and endemicity, and threatened status.
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Answer:
According to IUCN (2004), the total number of plant and animal species described so far is slightly more than 1.5 million.
Estimates place the global species diversity at several million.
A large proportion of the species waiting to be discovered are in the tropics.
More than 70 per cent of all the species recorded are animals, while plants (including algae, fungi, bryophytes, gymnosperms and angiosperms) comprise no more than 22 per cent of the total.
Among animals, insects are the most species-rich taxonomic group, making up more than 70 per cent of the total.
The number of fungi species in the world is more than the combined total of the species of fishes, amphibians, reptiles and mammals.
The largely tropical Amazonian rain forest in South America has the greatest biodiversity on earth.