Explanation:
A critically endangered species is one that is facing a very high risk of extinction in the world and is at the highest risk category. Example - giant salamanders. A vulnerable species is one that is not currently endangered but faces a high risk of endangerment in the near future, either due to a declining population or threats to natural habitats. Example- Giant panda, snow leopard, red panda etc.
- Endemic species are plants and animals that exist only in one geographic region. Example- Asiatic lion in Gir forest, Nilgiri Blue Robin, Nicobar megapode.
- The animals that no longer exist on earth are called extinct species. Example- Dodo, passenger pigeon, Tasmanian tiger, woolly mammoth.