Don't u mean "what are the causes of extinct species??"
and there are many causes for example:
food chain has altered
not producing enough children for the next generation
different illness have occurred and changed and wiped them all out
A species that is not extinct is referred to as Extant in Biology.
Yes they are in danger of being extinct they are on the appendix 1 endangered species list
Evolution
Animals are extinct when there's no known animals part of the species still alive.Or, if you're asking how they become extinct, that can be because of many causes.
Primarily most species become extinct because they are unable to adapt....that being said dozens of identified species do not become extinct every day.
Extinct means that there are no individuals of a species alive anywhere in the world, or the universe, for that matter. Extinct in the wild means that there may be some in captivity, but there are none anywhere in the wild.
species come endangered because their habitat is rather being destoryed or polluted. species come extinct because they died because moreand more polluted water or stuff is being destoryed.
It means that the species is close to being extinct.
The same problem occurs with other endangered species, it causes an environmental disturbance, but hornets is very improbable to become extinct.
It means a species in in danger of being extinct
when there are no living members of a species the species is said to be "extinct".
extinct species of Maldives