AP BIOLOGY

Detailed explanation-1: -A species is extinct in the wild when it only survives in cultivation (plants), in captivity (animals), or as a population well outside its established range. A species may be listed as extinct in the wild only after years of surveys have failed to record an individual in its native or expected habitat.

Detailed explanation-2: -Extinct animals are animal species that have stopped breeding, died and no longer exist.

Detailed explanation-3: -Extinction happens when environmental factors or evolutionary problems cause a species to die out. The disappearance of species from Earth is ongoing, and rates have varied over time. A quarter of mammals is at risk of extinction, according to IUCN Red List estimates. To some extent, extinction is natural.

Detailed explanation-4: -There are two main types of extinction: Mass extinction and background extinction.

Detailed explanation-5: -When we remove a species that was formerly listed as threatened or endangered under the Endangered Species Act (ESA), we “delist” that species. We remove species from the lists of endangered and threatened species for three reasons: The species has recovered to the point that it no longer needs the ESA’s protection.