AP BIOLOGY

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. Until the early 1800s, billions of passenger pigeons darkened the skies of the United States in spectacular migratory flocks.

Detailed explanation-2: -Today, we can distinguish between two types of extinction, depending on the way the species disappears: Phyletic extinction or pseudoextinction.

Detailed explanation-3: -Extinct animals: The animals that no longer exist on Earth are called extinct animals. Example: Dinosaurs, Dodo, etc.

Detailed explanation-4: -More than 99 percent of all organisms that have ever lived on Earth are extinct. As new species evolve to fit ever changing ecological niches, older species fade away. But the rate of extinction is far from constant.

Detailed explanation-5: -Extinct species are those species that are no longer in existence. Example :-Dinosaurs and Dodo.