Question

Quite a few animal species are endangered and some have gone extnct why

Answer 1

Because of :-
1.Increasing human population
2.Increaaing pollution
3.Global Warming

Answer 2

Since some species are found only in concentrated parts of the world, it is up to the people of the place to preserve the species.
As human population increases the demand increases as well. As a result there is a huge demand for wood.

Forests are cut and wildlife is in danger. And finally they are in the hands of poachers and hunters.

I hope this helps