| A | B |
| Ecosystem | All the living and nonliving things in an environment |
| Habitat | The home of a living thing |
| Community | All the LIVING things in an ecosystem |
| Population | All the members of a single type of organism |
| Food Chain | A series of organisms that depend on one another for food. |
| Producer | An organism such as a plant that makes own food. |
| Decomposer | An organism that breaks down plant an animal material |
| Consumer | An organism that eats producers or other consumers. |