Chemistry, 16.12.2020 20:50 rgilliam3002
A scientist sets up an experiment to test which substance (caffeine, nicotine, alcohol, or water) affects plant growth the most. Figure 1 shows how the experiment was set up. The plants, containers/pots, soil, and sunlight were kept the same. Control variables (the things that are kept the same) in this experiment are:
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A scientist sets up an experiment to test which substance (caffeine, nicotine, alcohol, or water) af...
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