Define: (1) Threatened species (2) Extinct species (3) Endemic species (4) Endangered species
(1) Threatened species: Threatened Species are any species, which includes animals, plants, fungi, etc., which are vulnerable to endangerment shortly. Eg, Bengal tigers.
(2) Extinct species: These are species that are not found after searches of known or likely areas where they may occur. A species may generally be extinct from a local area, region, country, continent, or the entire earth. E.g. Quagga, Dodo, etc.
(3) Endemic species: These are species that are found only in some particular areas, usually isolated by natural or even geographical barriers. E.g. Asiatic lion
(4) Endangered species: These are species that are in danger of extinction. The survival of this species is difficult if negative factors which have led to a decline in their population continue to operate. E.g. Indian gharial