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How much time must pass before a species is considered extinct?
Wiki User
∙ 12y ago
It actually doesn't matter the length of time. When the last animal of that specific species is dead, the the animal is proven to be extinct.
Sometimes animals are thought to be extinct, then are re discovered, as the case of the ivory billed woodpecker in the U.S.
It usually takes many years after the last sightings of an animal before it is declared extinct. In some cases the last known animal of a species is in a zoo so when that animal dies the species will be declared extinct. This was the case with the passenger pigeon which was hunted to extinction in the early 20th century. The last passenger pigeon died in the Cincinnati Zoo in 1914.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoI am not entirely sure whether you want to know what causes a species to become extinct, or what the term extinction means. I will reply to both. There are lots of things that can wipe out a species, including loss of habitat (they live in a swamp, let us say, but people are draining the swamps to make room for new housing projects), or disease, predation, pollution, or any combination of these or other causes (dinosaurs were probably killed by a large meteor or comet striking the Earth and disrupting the global climate). And the meaning of extinction is simply that the species no longer exists; all members have died out.
WHEN THE LAST INDIVDUAL HAS DIED
Wiki User
∙ 13y agoa species goes extinct when there is no more of that species alive.
Angel Alejandre
when the last individual has died
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How much of an impact would it play if the cheetah was extinct?
Some species,such as the Thomson's Gazzelle, have evolved around speed, namely, escaping cheetahs. These, and many other of the medium to small sized prey would overpopulate and need culling. The overpopulation of these species may result in over grazing and over browsing, destroying much of the habitat.
What are two main causes of species extinction?
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It impacts it because they mostly take so much that the species may turn extinct.
How does a scientists collecting species impact that species?
It impacts it because they mostly take so much that the species may turn extinct.
Examples of endangered and extinct species?
somebody please answer this question i need it for a project
Why do you need to save the panda?
Because it is an endangered species, and if we do not save it, it will die out, or become extinct, much like the Dodo.
Is any species of platypus going extinct?
There is only one species of platypus - ornithorhynchus anatinus - and it is not going extinct. Though elusive and rarely seen, platypus numbers are believed to have recovered to about e same population as they enjoyed prior to European settlement. Protective legislation has done much to ensure the platypus does not become extinct.
What measure is WWF taking to protect extinct organisms?
WWF doesn't do anything to protect extinct organisms. When a species has become extinct it's lost, gone forever. Not much point in trying to protect something that isn't there any more.
What happens if a species goes extinct?
play with them when they are not doing any thing and i don't like them doe and they are very brotective
How long before the grevy's zebra is extinct?
Not much longer:( they are being hunt down for there skin and the amazing creature will soon be extinct unless we stop.
Why are dodo bird an endangered species?
The Dodo bird is not an endangered species; it is an extinct species of bird. It is widely known that dodo birds became extinct because of human intervention; they were doing fine, minding their own business, until humans found these to be a good source of food and sustenance. So humans hunted them until their hearts' content, devoured their eggs and fed any remains to the hunting dogs. Dodo birds are extinct - period.
How is genetic variation related to a species chance of becoming extinct?
Little or no variation could lead to failure to adapt to changing conditions. Too much variation would prevent the species from passing on beneficial traits because they would change too rapidly.
Are Bison going extinct?
Some species of bison are extinct, but as a whole genus, no.
