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Abiotic factor
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Nonliving factor in an ecosystem
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Autotroph (producer)
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An organism that can make its own food by using energy from sunlight
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Biological magnification
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Increasing concentration of harmful chemicals in organisms through a food chain
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Biomass
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Total amount of living mass within a trophic level
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Biome
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A large area that has the same climate and communities
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Biosphere
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The region of the Earth that supports life
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Biotic factor
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Living factor in an ecosystem
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Carnivore
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An organism that obtains energy from eating other consumers
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Carrying capacity
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Number of organisms that an environment can support
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Chemoautotroph
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An autotroph that makes its own food by using energy from chemicals rather than sunlight
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Commensalism
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A form of symbiosis in which one member of the relationship benefits and the other is neither helped nor harmed
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Community
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All the populations of an ecosystem
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Competition
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A relationship in which organisms compete for resources
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Decomposer
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An organism that gets its energy from breaking down organic matter
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Detrivore
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An organism that gets its energy from the remains of other organisms
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