NEET BIOLOGY

Detailed explanation-1: -Regardless, scientists agree that today’s extinction rate is hundreds, or even thousands, of times higher than the natural baseline rate. Judging from the fossil record, the baseline extinction rate is about one species per every one million species per year.

Detailed explanation-2: -Over the last 126, 000 years, there has been a 1600-fold increase in mammal extinction rates, compared to natural levels of extinction.

Detailed explanation-3: -Extinction refers to the dying out or extermination of a species.

Detailed explanation-4: -Nature loss can also weaken the biodiversity that collectively dilutes and defends against some disease threats. For instance, scientists say that more diverse bird populations can help buffer humans against the effects of West Nile virus. Deterioration of nature hurts our ability to heal, too.