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PSSA unit 2.
|Ecosystem||a biological community of interacting organisms and their physical environment.|
|Enviornment||the surroundings or conditions in which a person, animal, or plant lives or operates.|
|Abiotic||physical rather than biological; not derived from living organisms. devoid of life; sterile.|
|Biotic||of, relating to, or resulting from living things, especially in their ecological relations.|
|Biomes||a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra.|
|Niche||a position or role taken by a kind of organism within its community.|