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The exact answer is not known. We do know that it is over 99%.
What else can I help you with?
What are some characteristics of species likely to become endangered and extinct as a result of human activities?
long-lived individuals become endangered or extinct as a result of human activity.
What happened to most species that lived on earth?
they got extinct
What animal species are extinct?
just about every one. 90% of all creatures that have lived on earth are extinct.
A species that once lived on earth but is no longer found alive is called?
Extinct is when an animal or plant doesn't exist any longer on earth.
Organisms that once lived on earth but all of their kind have died out a dead species?
A species that has entirely died out is considered extinct. An example of extinct species are the dodo, saber-tooth tigers, woolly mammoths, Canary Island giant rats, Cape lion, and the Red Rail.
Out of every hundred species that has ever lived how many are now extinct?
99
Is extinct a pronoun or not?
No, it is an adjective describing a noun. (ex: They are extinct. or The extinct bird once lived on this island.)
Fossil evidence indicates that most extinct primate species lived in trees?
false
What elephants are extinct?
The most well-known extinct elephant species is the mammoth, which went extinct about 4,000 years ago. Other extinct elephants include the straight-tusked elephant and the dwarf elephant species that lived on islands like Sicily and Malta.
Why did the Rhamphorhynchus become extinct?
Like all dinosaurs, we still do not know how this prehistoric animal became extinct. it evolved though, because it lived in the Jurassic period of the mesosoic, and did not become extinct, but it evolved
Why did Rhamphorhynchus become extinct?
Like all dinosaurs, we still do not know how this prehistoric animal became extinct. it evolved though, because it lived in the Jurassic period of the mesosoic, and did not become extinct, but it evolved
True or false that most organisms that have ever lived on Earth are now extinct?
Yes. There have been several episodes of mass extinction. The worst was at the end of the Paleozoic era. The most famous came at the end of the Mesozoic, when the dinosaurs disappeared. Nature is cruel. Of course, some people say that species have not really become extinct, but merely evolved into different forms.
