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| Term | Definition |
|---|---|
| abiotic | nonliving |
| biome | collection of ecosystem that have similar environments and organisms. |
| biotic | consisting of living organisms and products of organisms. |
| community | all the interacting populations in a specified area |
| controlled experiment | an experiment in which the observer is able to standardize all but one variable to measure results. |
| ecosystem | a system of interacting organisms and nonliving factors in a specified area. |
| ecosystem service | a benefit that humans obtain from the environment. |
| individual | |
| observational study | |
| population study |