| A | B |
|---|
| ecology | study of relationship between living things and environment |
| ecosystem | all living and nonliving things in same area |
| biosphere | part of planet where life exists |
| community | all populations living in same habitat |
| habitat | environment where organisms live |
| aquatic | ecosystem in water |
| terrestrial | ecosystem on land |
| population | all organisms of same species living in a certain area |
