NEET BIOLOGY

Detailed explanation-1: -mass extinction event, any circumstance that results in the loss of a significant portion of Earth’s living species across a wide geographic area within a relatively short period of geologic time.

Detailed explanation-2: -Mass extinctions-when at least half of all species die out in a relatively short time-have occurred only a handful of times over the course of our planet’s history. The largest mass extinction event happened around 250 million years ago, when perhaps 95 percent of all species went extinct.

Detailed explanation-3: -These are called mass extinctions, when huge numbers of species disappear in a relatively short period of time. Paleontologists know about these extinctions from remains of organisms with durable skeletons that fossilized.

Detailed explanation-4: -An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp change in the diversity and abundance of multicellular organisms.