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The Permian mass extinction occurred about 248 million years ago and was the greatest mass extinction ever recorded in earth history exterminating more than 95% of all life on EarthTwo theories have been proposed - the impact of a huge meteorite or comet over 10 kilometres in diameter, or a massive and prolonged volcanic eruption. The volcanic theory appears to be taking the lead at the present time.

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What caused each mass extinction?

Asteroids.


Relationship between extinct and mass extinction?

Mass extinction is when many animals go extinct within a short period of time caused by the same variables/factors leading to the mass extinction.


How do you use the word mass extinction in a sentence?

We are still not sure what caused the mass extinction of the dinosaurs, though an asteroid impact seems to be the popular theory.Scientists believe we may be heading towards another mass extinction event.


What may have caused the first mass extinction 65 million years ago?

The leading theory for the first mass extinction 65 million years ago is a catastrophic event such as an asteroid impact. This event is believed to have led to environmental changes that caused the extinction of the dinosaurs and many other species.


Who disappeared during the last mass extinction?

Notable extinctions during the last mass extinction included all non-avian dinosaurs, pterosaurs, plesiosaurs, and ammonites.


When was the last mass extinction?

The Cretaceous–Tertiary extinction event 65 million years ago was the last mass-extinction, and many believe that humans are causing a mass-extinction right now.


The mass extinction at the end of the Mesozoic Era was caused by .?

a comet impacting the earth


What is some catastrophic events that caused periods to come to an end?

mass extinction


What is the K-T extinction?

The k-t extinction marks the transition from the cretaceous to the tertiary period in which it is hypothesized that a meteorite struck the Earth and caused a mass extinction.


What was the mass extinction that was most likely caused by the formation and retreat of glaciers?

"It was the Cretaceous-Tertiary or the K-T Extinction." - WrongThe K-T Extinction was the mass extinction that wiped out the dinosaurs, which was more widely believed to be caused by a heavenly body colliding with the Earth.The mass extinction that involved a large period of glaciation was in truth the Ordovician-Silurian Extinction, which was the earliest mass extinction.The extinction is associated with a period of glaciation. First, sea levels dropped as glaciers formed. Later, as the glaciers melted, the sea level rose. The cause of this glaciation remains a mystery. One suggestion is land plants caused it by absorbing large amounts of carbon dioxide from the atmosphere. The drop in carbon dioxide could then have caused global cooling.


What is the effect of mass extinction?

The effect of mass extinction is extinction, death of a mass


Was there a mass extinction during the last ice age?

Many geologists consider what you call the "last ice age" to be the last glacial of the present Ice Age, with the ice retreat starting only about 10-12ka. There was no mass extinction. A good many species did migrate or disappear altogther as the ice retreated, but in no way was it a mass extinction.