Question

What of the following is true about the species which have became extinct?

• A. About 99% of all that lived on earth.
• B. About 75% of all that lived on earth.
• C. About 25% of all that lived on earth.
• D. None of the above.

Answer 1

The correct option is A About 99% of all that lived on earth.

Earth's atmosphere has changed a lot in millions of years. Apart from atmospheric changes, changes caused by the invasion of foreign species, habitat degradation, and pollution etc. Has been a major cause of extinction. These changes whether caused by nature or not resulted in survival of only those species who could adapt in those changing Environment.

Also, there have been 5 mass extinction 99 hence 99% of all the species that lived on earth became extinct.

So, the correct option is 'About 99% of all that lived on earth'.