GEOLOGY

Detailed explanation-1: -Extinction is the process in which groups of organisms die out. If over an extended period of time the birth rate of a species is less than the death rate, then extinction will eventually occur.

Detailed explanation-2: -The species which no more exist on the earth are known as extinct species.

Detailed explanation-3: -Extinct species are those species that are no longer in existence. Example :-Dinosaurs and Dodo.

Detailed explanation-4: -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.