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The independent variable is the only factor that a scientist
O varies for different groups in an experiment.
O measures in an experiment
O keeps constant for each group in an experiment.
O records throughout an experiment.
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a non redox reaction occurs when there is not a transfer of electrons. for redox reactions, which are reduction-oxidation reactions, a change in the oxidation number occurs. elements that are reduced gain electrons, and elements that are oxidized lose electrons.

explanation:

answer: i would say b.

explanation:

distance, luminosity, brightness, radius, chemical composition, and temperature

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.