| A | B |
|---|
| Wilt | to become limp and droop, as a plant might do without enough water |
| Adaptation | the action of a plant or an animal which allows it to live in its environment |
| Behavioral adaptation | the action (or behavior) of a plant or an animal which helps it to survive in its environment (such as migration and hibernation in animals) |
| Physical adaptation | the physical things that help a plant or an animal survive in its environment; also called structural adaptation; examples include the webbed feet of ducks and the thorns on a rosebush |
| Environment | the air, the water, the soil, and all the other things that are around living things |
| Habitat | the place in which a living thing lives, including all the other kinds of living and nonliving things sharing its environment |
| Migration | the seasonal movement of animals from one place to another for feeding or breeding (such as many birds and whales) |
| Hibernation | to spend the winter in a deep sleep; examples of animals that hibernate include bears, groundhogs, woodchucks, snakes, and frogs |
| Camouflage | a disguise or false appearance that helps an animal blend in with its surroundings (such as a pattern on frogs) |
| Dormancy | a time of little activity; examples include the following: the hibernation of an animal, seeds of many plants during the winter |
| Weathering | the breaking and wearing away of rocks |
| Erosion | the moving of weathered rocks and soil by wind, water, and ice |
