What are Extinct Species, Endangered species and Threatened species?

What are Extinct Species, Endangered species and Threatened species?

Extinct Species:

Extinction is the termination of a kind of organism.

The disappearance of species from Earth.

When the last member of a species dies, the species becomes an extinct species. 
A species not definitely located in the wild 

Endangered species:
When a specie in danger of becoming extinct, it is called an
endangered species. 
A species that is very likely to become extinct in the near future.
Threatened species:
Species with low numbers that could become endangered are called threatened species.


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