| A | B |
|---|
| Ecology | the study of interactions aof all plants and animals with their physical environment |
| Habitat | Where an organism lives, its home |
| Population | A group of one type of organism living in an area |
| Food Chain | model that shows energy flow through an ecosystem |
| Abiotic | non-living things in an ecosystem |
| Biotic | living things in an ecosystem |
| Niche | the role of an organism, their job in the ecosystem |
| Ecosystem | Acommunity of organisms that interact with their environment |
| The main sourse of energy in all ecosystems | The sun |
| competition | two organisms fighting for resources |
