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How many mass extinction of species are there on records since the origin and diversification of...

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Biology

How many mass extinction of species are there on recordssince the origin and diversification of life on earth? How is thepresent episode different? What is the result of loss ofbiodiversity in a region?

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3.8 Ratings (394 Votes)
There were five 5 major extinction events in history and scientists have spoken about these events based on species fossil record For example scientific evidence of examples of coral reefs etc as explained below Mass extinction events have been identified periodically through the history of life with five major extinctions occurring since the Cambrian period each of which eliminated over 20 of extant life and with lesser mass extinctions being even more frequent 1 The first major extinction took place at the end of the Ordovician period this extinction is mainly observed based on the fossil record of majority of 60 of terrestrial and aquatic life including oceans 2 The second mass extinction was taken place 360 million years ago during the Late Devonian period    See Answer
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