APES Unit 1 Vocabulary

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10% Rule

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Approximately 10% of energy is transferred to the next trophic level

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Abiotic

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non-living, never alive

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Biogeochemical Cycle

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Cycling of substances. Ex: carbon, water, nitrogen cycles

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Biome

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contains characteristic communities of plants and animals that result from, and are adapted to, its climate

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Biotic

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alive or once alive

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Cellular Respiration

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a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate, and then release waste products

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Commensalism

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a relationship in which one organism benefits and one is neither harmed nor benefits

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Community

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all the living things in a given area

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Competition

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organisms fighting for limited resources (inter = with in itself, intra = between groups)

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Constants/controlled variables

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variables kept the same for all treatments