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Published byLaura Townsend Modified over 6 years ago
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The Biosphere the thin layer of the earth that supports life.
If the earth was the size of an apple, the biosphere would be the thickness of its skin.
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An organism has all the characteristics of life.
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A population is group of interacting and interbreeding organisms.
Members of a population must be all the same species.
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A community is a group of interacting populations.
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A community includes all the living things (biotic factors) in one place.
It contains no abiotic factors.
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An ecosystem is a community plus its non-living (abiotic) environment.
Abiotic Factor Biotic Factor
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