| A | B |
|---|
| amphibian | an animal with a backbone that lives part of its life cycle in water and part on land |
| embryo | a developing animal before it is born or hatched |
| gills | the parts of fish and tadpoles that are used to take oxygen from water |
| instinct | an action that an animal can do without learning |
| larva | a young animal that has a different shape than the |
| tadpole | a very young frog or toad |
| mammal | an animal with a backbone and hair or fur; mothers produce milk for their babies |
| nymph | a stage in an insect life cycle between egg and that looks like an but has no wings |
| pupa | the stage in the insect life cycle between larva and |
