| A | B |
|---|
| ecosystem | All living things and nonliving things in an environment, including their interactions with each other. |
| abiotic factor | a nonliving part of an environment |
| biotic factor | A living part of an ecosystem. |
| population | All the members of a species in an area. |
| community | All the living things in an ecosystem. |
| ecology | The study of how living things and nonliving things interact. |
| habitat | The place where a plant or animal naturally lives and grows. |
| niche | The role of an organism in a community. |
