Question

What do you call a phenomenon where a species that used to exist, doesn't exist anymore'?

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Answer 1

The phenomenon where a species that used to exist, does not exist anymore is known as extinction.Extinction is a natural phenomenon predicted by Darwin in his theory of evolution. A species goes extinct if it is not able to adapt to changes in it's environment, or compete effectively with other organisms. Over the history of the earth over 99% of all the species that have ever lived have gone extinct.