| A | B |
| trait | a feature passed on to a living thing from its parents |
| vertebrate | animals with a backbone |
| larva | stage in an insect's life after it hatches from the egg |
| pupa | stage in an insect's life between larva and adult |
| adaptation | trait that helps a living thing survive in its environment |
| inherited | passed on from parent to offspring |
| migrate | to move to another place to find better climate, food, or a mate |
| hibernate | to spend winter resting; body systems slow down in order to save energy |
| invertebrate | animals without a backbone |
| life cycle | the stages through which an organism passes between birth and death |
| camouflage | to blend into the surroundings |
| mimicry | to protect by looking like another animal |
| amber | hardened tree sap |
| mammals | animals that have hair, breathe air through lungs, and feed milk to their young |
| reptiles | animals with dry, scaly skin and breathe air through lungs |
| amphibians | animal that spend part of their lives in water and part on land |
| fish | animals with slippery scales and breathe through gills |
| birds | vertebrates with feathers, wings, and bills. |
| anthropods | animals that wear their skeletons outside their bodies |