TN Ecology Review

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Biosphere

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The area between the highest mountain and the deepest ocean where life can be found.

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Trophic Level

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Each step in the transfer of energy and matter within a biological community.

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Sunlight

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The original source of almost all energy in most ecosystems.

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Competition

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A relationship where organisms vie for the same resources in an ecosystem.

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Biome

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A group of land ecosystems with similar climates and organisms.

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Ecosystem

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A community of living organisms and their physical environment interacting as a system.

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Food Web

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A complex network of feeding relationships among various organisms in an ecosystem.

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Adaptation

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A trait that helps an organism survive and reproduce in its environment.

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Parasitism

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A relationship where one organism benefits at the expense of another.

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Mutualism

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A relationship where both organisms benefit from the interaction.