Astudent hypothesizes that a goldfish will be more active in a bowl that has red gravel than in a bowl of grey gravel. to get this hypothesis, the student places one goldfish in a bowl with red gravel and another goldfish in a bowl with grey gravel. the color of the gravel is the variable in the experiment.
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Astudent hypothesizes that a goldfish will be more active in a bowl that has red gravel than in a bo...
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