Question

Q. Which of the following correctly describes the term ‘Mass Extinction’?

• A. When loss of more than 50% of species is reached in an ecosensitive area.
• B. A geological event when more than 90% of both flora and fauna are lost within a few decades.
• C. The moment when the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point, takes place.
• D. When the loss of species rapidly outpaces the formation of new species.

Answer 1

The correct option is D When the loss of species rapidly outpaces the formation of new species.

Explanation:

A mass extinction event is when species vanish much faster than they are replaced. This is usually defined as about 75% of the world's species being lost in a 'short' amount of geological time - less than 2.8 million years.