| Term | Definition |
|---|
| amphibian | an animal that can live both on land and in water |
| arachnid | any of a class of animals that has eight legs, but no antennae or wings |
| crustacean | animal, such as a lobster or crab, with a tough outer shell, and a segmented body that lives in water |
| reptile | air-breathing, scaly vertebrate including snakes, lizards, alligators, and turtles |
| vertebrate | has a backbone |
| invertebrate | no backbone |
| habitat | place where an animal or plant lives or group naturally; environment |
| heredity | the passing of characteristics from parents to children by means of genes |
| mammal | any warm-blooded vertebrate animal, which includes humans and other animals that have hair and feed milk to their young |
| survive | to remain alive |
| reproduction | the process of an organism producing offspring |
| organism | a living thing (person, animal, or plant) |
| predator | an animal that hunts and kills other animals for food |
| prey | an animal that is hunted by a predator |
| energy pyramid | a visual representation of where and how energy flows through animals (begins with the sun) |
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