LS: Bio- Unit 1-Interdependent Relationships in Ecosystems

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Independent Variable

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The experimental factor that is manipulated; the variable whose effect is being studied.

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Dependent Variable

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The outcome factor; the variable that may change in response to manipulations of the independent variable.

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Experimental Group

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In an experiment, the group that is exposed to the treatment.

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Control Group

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In an experiment, the group that is not exposed to the treatment and serves as a comparison for evaluating the effect of the treatment.

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Constant Variables

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The variables that remain the same throughout the experiment.

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Data

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Facts and statistics collected together for reference or analysis.

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Hypothesis

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A testable prediction, often implied by a theory; an educated guess.

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Theory

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A hypothesis that has been tested with a significant amount of data.

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Interdependent Relationships

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Continuous sharing of information and resources by dispersed and specialized subunits.

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Ecology

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The study of how living things interact with each other and their environment.