| A | B |
|---|
| ecology | study of relationships between living things and the environment |
| community | living part of any ecosystem |
| population | group of similar organisms living together |
| habitat | place in which an organism lives |
| producer | organism that can make its own food |
| consumer | organism that feeds directly or indirectly on producers |
| decomposer | organism that breaks down organic matter into simpler substances |
| food chain | food and energy links between organisms in an ecosystem |
| food web | all the food chains in an ecosystem that are connected |
| niche | role of an organism in its community |
