LIFE SCIENCE

Detailed explanation-1: -Extinction is the death of all members of a species of plants, animals, or other organisms. One of the most dramatic examples of a modern extinction is the passenger pigeon.

Detailed explanation-2: -The three types of extinction are mass extinction, background extinction, and human-led extinction. Mass extinctions occur quickly and wipe out large amounts of species at a time.

Detailed explanation-3: -Extinctions happen when a species dies out from cataclysmic events, evolutionary problems, or human interference. The truth is, scientists don’t know how many species of plants, animals, fungi, and bacteria exist on Earth.

Detailed explanation-4: -The largest extinction took place around 250 million years ago. Known as the Permian-Triassic extinction, or the Great Dying, this event saw the end of more than 90 percent of Earth’s species. Although life on Earth was nearly wiped out, the Great Dying made room for new organisms, including the first dinosaurs.

Detailed explanation-5: -Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point.