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Published byOscar Welch Modified over 9 years ago
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Organism Population Community Ecosystem Biome Biosphere
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Ecological Levels of Organization
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Organism First (lowest) level of organization An individual, single species Any unicellular or multicellular form exhibiting all of the characteristics of life
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Population A group of organisms of the same species that live in the same geographical area Produce fertile offspring Compete with each other for resources
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Community Two or more populations of different species that interact and live in the same geographical area
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A community of living organisms and the abiotic factors they interact with ◦ Abiotic factors—non-living factors (light, air, water, etc.) Ecosystem
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One of several types of ecosystems define by their climate Biome
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A collection of ecosystems Includes all of the living world and the biotic and abiotic factors that affect life Biosphere
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