1. Threatened species are any species (including animals, plants, fungi, etc.) which can be endangered in the near future. Species that are threatened are characterised by the population of that species.
2. Extinct species is a particular animal or plant species that can no longer be available as a wild, the species has died out.
3. Endemic species are those species of plants and animals which are found exclusively in a particular area.
4. An Endangered (EN) species are those species which are less in number and can be extinct in near future.