Its part of a naturally occuring cycle.Mankind however seems to have quickened the demise of certain species due to his abuse of Planet Earth.
about 100
The species is said to be extinct.
Catastrophism.
This could kill all the sea lions present in the sea , In the end it will become extinct , Now the meaning of extinct is as follows : Species that are no longer present on earth is called extinct species .
You can't. If a species is extinct, that means that no organism in that species is alive. It is gone forever.
Extinct means that there are no longer alive and completely dead, the whole species is dead and are no longer on earth alive. But threatened means that they are on the edge of being completely dead.
1,000:1
It can be assumed that, eventually, 99.9% of endangered species will end up extinct. This is because, according to scientists, 99.9% of species that have ever existed on the Earth have become extinct.See the related link for more information.
Plate tectonics cause earthquake which may result into upheavals of earth perishing the living objects that become extinct in due course of time.
It is estimated that 99% of all animals that have ever lived are now extinct.
Extinct is when an animal or plant doesn't exist any longer on earth.
As they live the organisms comprising a species will age and die, they therefore need to reproduce (have babies) in order to replace the members of the species that die or the species will cease to exist (become extinct).