species – n. a group of animals or plants that are similar and can produce young animals or plants

adopt – v. to approve or accept; to take by choice

abundant – adj. plentiful

conservationist – n. a person who acts for the protection of wildlife and the environment

extinction – n. the state or situation that results when something (such as a plant or animal species) has died out completely

stable – adj. secure; strong or fixed

no-brainer – n. a simple decision that does not require a lot of thinking