| A | B |
|---|
| Ecology | The study of how living things react to each other and with their environment |
| Ecosystem | The comunity of organisms that live in a particular area along with their non-living surroundings |
| Environment | The physical (land) and biological (living) things that surround and effect an organism |
| Producer | An organism that can make its own food |
| Consumer | An organism that obtains energy by feeding on other organisms |
| Decomposer | An organism that breaks down wastes and dead organisms |
| Abiotic | The non-living part of an organisms habitat |
| Biotic | The living part of an organisms habitat |
| Watershed | A drainage basin. The area of land where all the water that is under it or drains off of it goes into the same place |
| Biome | A group of land ecosystems with similar climates and organisms |
| Dispersal | The movement of organisms from one place to another. |
| Population | All members of one species in a particular area |
