| A | B |
|---|
| Abiotic factor | Non living things in an ecosystem |
| Biotic factor | Living things in an ecosystem |
| Organism | A single organism of a particular species |
| Population | All of the same type of organisms within a certain area |
| Community | All of the various populations within a given area |
| Ecosystem | The living and non living things in a particular area |
| Niche | The job or role a particular organism has in an ecosystem |
| Habitat | the particular ecosystem in which an organism successfully survives |
