| A | B |
| decomposer | A living thing that breaks down the wastes of another living thing. |
| food web | Overlapping food chains. |
| producer | A living thing that makes its own food. |
| energy pyramid | A model that shows how energy is lost for each higher animal in a food chain. |
| consumer | A living thing that eats other living things. |
| predator | An animal that hunts other animals. |
| food chain | The path of food from one living thing to another. |
| prey | An animal that is hunted. |
| interact | When plants and animals work together. |