NEET BIOLOGY

Detailed explanation-1: -…and 10, 000 times the background extinction rate (which is roughly one to five species per year when the entire fossil record is considered).

Detailed explanation-2: -The current rate of species extinction is estimated to be 100 times the natural background rate, and it is generally accepted that species loss correlates with habitat destruction. Historically, many protected areas were selected for reasons other than the optimal protection of biological diversity.

Detailed explanation-3: -Judging from the fossil record, the baseline extinction rate is about one species per every one million species per year.

Detailed explanation-4: -The Holocene extinction, or Anthropocene extinction, is the ongoing extinction event during the Holocene epoch.

Detailed explanation-5: -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.