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Pssa unit 1
Term | Definition |
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Ecosystem | A community of living organisms and their interrelated physical and chemical environment. |
Environment | total of the surroundings (air, water, soil, vegetation, people, wildlife) influencing each living being’s existence, including physical, biological and all other factors; the surroundings of a plant or animal |
Homeostasis | The tendency for a system to remain in a state of equilibrium by resisting change. |
Abiotic | A nonliving factor or element (e.g., light, water, heat, rock, energy, mineral). |
Biotic | An environmental factor related to or produced by living organisms. |
Biomes | A community of living organisms of a single major ecological region. |
Niche | The role played by an organism in an ecosystem; its food preferences, requirements for shelter, special behaviors and the timing of its activities (e.g., nocturnal, diurnal), interaction with other organisms and its habitat. |