LIFE SCIENCE

Detailed explanation-1: -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.

Detailed explanation-2: -Extinction is the death of all members of a species of plants, animals, or other organisms.

Detailed explanation-3: -Extinction happens when environmental factors or evolutionary problems cause a species to die out.

Detailed explanation-4: -There are two main types of extinction that can occur on Earth. The first is mass extinction, which is a unnatural event. These are not very common and occur in a short period of time. Background extinction, conversely, is a considered a natural process and sometimes is referred to as the normal extinction rate.

Detailed explanation-5: -The extinction of species (and larger groups) is closely tied to the process of natural selection and is thus a major component of progressive evolution. In some passages of the Origin, Darwin seems to have seen extinction as part of natural selection; in others, as an inevitable outcome.