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Extinction is the complete disappearance of a species from life. No more of that species is alive on the planet. It happens all the time; the normal rate of extinctions is called the background extinction rate.

Mass extinction is when a group of extinctions significantly above the background rate occurs within a short space of time. The deifnition of 'significant' varies depending on the authority, and hence anywhere from five to over twenty mass extinctions have occurred on Earth in the known past - it is probable that more have happened, but this cannot be discerned from fossil and other records because of the size of the organisms involved.

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What is the effect of mass extinction?

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


What are the extinction of animals in the very distant past?

There were five major extinction events in the past. They are called the Cretaceous-Tertiary (or K-T) extinction event, the late Devonian mass extinction, the Permian mass extinction, the Ordovician-Silurian mass extinction and the Triassic-Jurassic mass extinction event.


What is the mass extinction?

the holocene extinction


Can you use mass extinction in a sentence?

The dinosaurs fell victim to a mass extinction.


What is it called when a high percentage of the species on earth dies off at a particular line?

This would be called a mass extinction or mass die off.This would be called a mass extinction.


When was the first mass extinction?

540 million years ago was the first 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.


How are mass extinction and mass extinction related?

they r related by having the same family blood


What is a synonym for mass extinction?

Catastrophic extinction event.


What is mass depletions?

Mass depletion is an event in which extinction rates are higher than normal but not high enough to be classified as a mass extinction.


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.


When did organisms suffer the largest mass extinction known?

The most devastating mass extinction occurred in the Late Permian (~250 million years ago).