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NATURE OF SCIENCE

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Across
2.all of Earth'ss organisms and the environments in which they live
4.the frozen portion of water on Earth's surface
6.the part of the Earth from its surface to the center
7.the study of the materials that make up the Earth and the processes that forms and changes these materials
9.a principle that describes the behaviorof natural phenomenon
10.an explanation based on many observations during repeated experiments
12.factor that is manipulated by the experimenter in the experiment
13.all the water in Earth's oceans, lakes, rivers, seas and glaciers plus all the water in the atmosphere
14.blanket of gases surrounding Earth
15.the study of the atmosphere which is the air surrounding the Earth
Down
1.factor in an experiment that can change if the independent variable is changed
3.study of the interactionsof humans with the environment
5.a series of problem solving procedures that help scientists conduct experiments
8.Study of Earth's ocean including the creatures that inhabit its waters, its physical and chemical properties and the effectsof human activities
10.an idea, a system, or mathematical expressions that represents the idea being explained
11.study of objects beyond Earth's atmosphere

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