Non-living chemical and physical parts of the environment that effect living organisms and the functioning of ecosystems.
A living thing, as an animal or plant, that influences or affects an ecosystem.
The community of organisms that live in a particular area, along with their nonliving environment.
An environment that provides the things a specific organism needs to live, grow, and reproduce.
An individual animal, plant, or single-celled life form.
All the inhabitants of a particular town, area, or country.
A group of people living in the same place or having a particular characteristic in common.
The action or process of classifying something according to shared qualities or characteristics.
The branch of science concerned with classification, especially of organisms; systematics.