When the meteorite hit Earth and killed the dinosaurs.
The effect of mass extinction is extinction, death of a mass
when at leat half of all the species die
the holocene extinction
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.
The dinosaurs fell victim to a mass extinction.
This would be called a mass extinction or mass die off.This would be called a mass extinction.
540 million years ago was the first mass extinction
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.
they r related by having the same family blood
Catastrophic extinction event.
Mass depletion is an event in which extinction rates are higher than normal but not high enough to be classified as a 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.