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Answer» IUCN classification shows following types of species: - Extinct Species: A species which no longer exists on the earth is called an extinct species, e.g dianosaur.
- Endangered Species: A species which is on the verge of extinction is called endangered species, e.g. rhino, Asiatic lion, etc.
- Vulnerable Species: If the population of a species has reduced to such a level that it may become endangered, then it is called vulnerable species, e.g. Gangetic dolphin.
- Rare Species: If population of a species is so low that it may become vulnerable or endangered, it is called rare species, e.g. Asiatic buffalo.
- Unknown Species: Some species are living on the earth but we do not have sufficient information about them. Such species is called unknown species.
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