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| study of earth's atmosphere |
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| can be broken down by microorganisms into harmless substances that can be used by other organisms |
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| What is the scientific method? |
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Definition
| set of sequential steps that one follows to problem solve |
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| What is a controlled experiment? |
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Definition
| an experiment set up to test one variable |
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| a possible explanation or solution to a problem |
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| What is a scientific law? |
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| rule that correctly describes a natural phenomenon |
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| What is a bright line spectrum? |
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Definition
| indicates that a light source is sending out only certain wavelengths of light |
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| scientist who studies the relationships between living things and their environment |
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| What is an important means of gathering information? |
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| A well-established and proven theory most likely to become? |
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| When a light source moves toward an observer, the light waves appear to be what? |
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| It is thought that before the big bang all the matter and energy in the universe was in the form of one what? |
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Definition
| extrememly small particle |
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| The discovery of background radiation distributed evenly throughout the universe provided support for what? |
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