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particular preference or point of view that is personal, rather than scientific.

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devices that produce magnified images of structures that are too small to see with the unaided eye.

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Community and its nonliving surroundings.

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the part of Earth that contains all ecosystems.

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populations that live together in a defined area.

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group of organisms of one type that live in the same area

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smallest functional unit of life

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Individual living thing

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devices that produce magnified images of structures that are too small to see with the unaided eye.

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a collection of living matter enclosed by a barrier that separates the cell from its surroundings. Cells are the smallest units of an organism that can be considered alive.

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the science that seeks to understand the living world.

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Applies to a well-tested explanation that unifies a broad range of observations. A theory enables scientists to make accurate predictions about new situations.

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The variable that is observed and that changes in response to the manipulated variable is called the responding or dependent variable.

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The variable that is deliberately changed is called the manipulated or independent variable.

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Whenever possible, a hypothesis should be tested by an experiment in which only one variable is changed at a time. All other variables should be kept unchanged, or controlled.

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a possible explanation for a set of observations or an answer to a scientific question.

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is a logical interpretation based on prior knowledge and experience.

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information gathered from observations is called evidence, or data.

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involves using one or more of the senses -- sight, hearing, touch, smell, and sometimes taste -- to gather information.

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Organized way of gathering and analyzing information about the natural world