| A | B |
|---|
| vertebra | each bone that makes up the backbone. |
| amphibian | vertebrate that usually lives in water after hatching from an egg, but as an adult can live on land. |
| organisms | living things. |
| invertebrates | animals with no backbones. |
| gills | the feathery parts on ech side of a fish's head. |
| reptile | a vertebrate that has dry, scaly skin and lays eggs that have leatery shells. |
| fish | vertebrate that lives in water and uses gills for breathing. |
| mammals | vertebrates that feed mild to heri young hand have hair or fur. |
| molts | periodically sheds its exoskeleton |
| birds | vertebrates that have wings and are covered with feathers. |
| exoskeleton | a hord outer covering that protecgts or supports an animal's body |
