NEET BIOLOGY

Detailed explanation-1: -A species is classified as endangered when its population has declined at least 70 percent and the cause of the decline is known. A species is also classified as endangered when its population has declined at least 50 percent and the cause of the decline is not known.

Detailed explanation-2: -“Endangered” means a species is in danger of extinction throughout all or a significant portion of its range. “Threatened” means a species is likely to become endangered within the foreseeable future.

Detailed explanation-3: -An animal is called endangered when there are so few of its kind left that it is in danger of becoming extinct-disappearing from the world forever. There are many reasons that animals and plants can become endangered or die out altogether. Since Earth began 4.5 billion years ago, it has been continually changing.

Detailed explanation-4: -A species considered to be facing a very high risk of extinction in the wild.