Question

What are the 5 mass extinctions on Earth?

Answer 1

Mass extinctions:

1. Over 99 percent of all species that have ever existed on Earth have become extinct.
2. As emerging species adapt to fill ever-changing ecological niches, older species become extinct.
3. The rate of extinction, on the other hand, is far from constant.
4. More than a few times in the previous 500 million years, 75 percent to more than 90 percent of all species on Earth have vanished in the geological blink of an eye in a series of disasters known as mass extinctions.
5. Though mass extinctions are catastrophic occurrences, they assist to open up the world for the emergence of other forms of life.

5 mass extinctions on Earth:

1. The Ordovician-Silurian Extinction occurred between 450 and 440 million years ago.
2. Devonian Extinction occurred between 375 and 360 million years ago.
3. The Permian-Triassic Extinction occurred 252 million years ago.
4. The Triassic-Jurassic Extinction occurred 202 million years ago.
5. Extinction of the Cretaceous-Tertiary Period: 66 Million Years Ago