Question

explain the " THEORY OF MASS EXTINCTION ".​

Answer 1

Answer:

the extinction of a large number of species within a relatively short period of geological time.

Answer 2

Around 443 million years ago, something known as Ordovician-Silurian mass extinction occurred. Right before this happened, most of the life on Earth was in the sea. It is believed that an ice age was the cause of the mass extinction. The ice age led to a fall in sea levels and an alteration in the chemistry of the seas as well, which led to the loss of about 85% of the life at sea.

There was also the Late Devonian mass extinction. This occurred about 359 million years ago. It led to the extinction of 75% of all the world's species (mainly sea-life). It appears a wide variety of factors may have led to this mass extinction, including sea level changes and even asteroid impacts.

One of the most famous mass extinctions was the Permian mass extinction, which occurred roughly 248 million years ago. An amazing 90-96% of the world's species died, and that's why this mass extinction has been called The Great Dying as a result. There have been numerous proposed theories as to the cause of this mass extinction, including asteroid impacts, sea level fluctuations, a release of a humongous amount of methane gas, volcanic activity, or drops in oxygen levels on Earth. Some of these may be connected, such as an asteroid impact triggering volcanic activit

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