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Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?
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The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes
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Amixture of ozone and oxyen containing 20% by volume of ozone defuse through a porous in172 sec whil...
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