Extinct
* A species is considered to be extinct when there are no longer any living members of the species.
* Extinction is a permanent state. Once a species is extinct, it cannot be brought back.
* There are many reasons why a species can become extinct, including:
* Habitat loss
* Overexploitation
* Disease
* Climate change
Endangered
* A species is considered to be endangered when there are very few living members of the species left and the species is at risk of becoming extinct.
* Endangered species are protected by law in many countries.
* There are a number of things that can be done to help endangered species, including:
* Creating protected areas
* Reducing habitat loss
* Captive breeding
* Reintroducing species to their former habitats
Extinction is a more serious problem than endangerment, but both terms are used to describe species that are at risk of disappearing from the Earth.