| A | B |
|---|
| Amphibian | Animals that usually live first on water and later on land. |
| Birds | Animals that have feathers. |
| Fish | Animals that live only in water. |
| Gills | Body features that take in oxygen from water. |
| Inherit | To receive features from parents. |
| Mammals | Animals that feed their young with milk. |
| Reptiles | Land animals that have scales. |
| Scales | A body feature that helps protect the body of fish. |
| Trait | A body feature that an animal is born with. |
| Lungs | Mammals breath with... |
| Eggs | Most birds, amphibians, and reptiles hatch from .... |
| Wings | Most birds fly with... |
| Metamorphosis | The process that takes place as a tadpole changes into a frog is... |
