How do animals become extinct?
Animals can become extinct because of environmental issues, whether it's due to a natural disaster or because people have removed their habitat. They can also be hunted to extinction.
An extinctt animal cannot be endangered. Do you mean how an endangered animal becomes extinct? Endangered animals become extinct by various reasons. It depends what animal it is. Most animals are killed by humans, or habitats destroyed. E.G: Tigers have become endangered because of poaching, and if this continuses, then they will become extinct. Animals become extinct becuase of a particular reason, which makes them endangered, then if carried on, extinct.