| A | B |
| community | all the populations that live in the same area |
| population | a group of the same species living in the same place at the same time |
| habitat | an environment that meets the needs of an organism |
| food chain | shows one pathway for food energy from organism to organism |
| energy pyramid | a diagram that shows the amount of food energy at each level in the feeding order |
| environment | everything that surrounds and affects an animal, including living and nonliving things |
| adaptation | a body part or behavior that helps an organism meet its needs in its environment |
| migration | the movement of a group of one type of animal from one region to another and back again |
| hibernation | a period when an animal goes into a long, deep “sleep” |
| camouflage | an animal’s or color or pattern that helps it blend with its surroundings |
| organism | Any living thing; plant, animal or fungus |
| predator | an organism that preys on and eats animals |
| prey | an organism caught or hunted for food |
| omnivore | eats plants and animals |
| carnivore | eats only animals |
| herbivore | eats only plants |
| food web | shows how several food chains connect and overlap |
| decomposer | feed on the wastes of plants and animals or on their remains after they die |
| consumer | eat other living things for energy |
| producer | living things that make their own food |
| ecosystem | groups of living things and the environment they live in |