Question

What has caused most of the mass extinctions on Earth?

Answer 1

In the most severe mass extinctions it may take 15 to 30 million years. The worst event, the Permian–Triassic extinction, devastated life on earth, killing over 90% of species.

Answer 2

In the most severe mass extinctions it may take 15 to 30 million years. The worst event, the Permian–Triassicextinction, devastated life on earth, killing over 90% of species.