kitle ekstinksiyonu

Турецкий язык - Английский Язык

Определение kitle ekstinksiyonu в Турецкий язык Английский Язык словарь

mass extinction

A sharp decrease in the total number of species in a relatively short period of time

A catastrophic, widespread perturbation where major groups of species become extinct in a relatively short time compared to normal background extinctions

The dying-out of several plant and/or animal groups over a brief period of geological time

An event in which a large number of organisms in many different clades are eliminated

An event in which large numbers of species die out in a very short time across the whole of the Earth The K-T event was one of the 'Big Five', the five largest mass extinctions

The sudden disappearance in the fossil record of a large number of species of life, to be replaced by new species in subsequent layers Mass extinctions are indications of catastrophic changes in the environment, such as might be produced by a large impact on the Earth

n: A catastrophic, widespread -- often global -- event in which major groups of species are wiped out over a relatively short period when compared to normal ( background ) extinction rates There have been five major mass extinctions, of natural causes (in at least one case due to an asteroid impacting the earth), in the earth's history We are now entering a sixth great mass extinction, this time of unnatural causes human activities

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