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OpenStudy (anonymous):
Suppose you want to find out the effects of light on the growth of tomatoes. What variables would you need to control in your experiment?
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OpenStudy (anonymous):
tomato type, quality and type of soil, and... thats it. you need to make sure that the light each one gets is different because thats the experiment.
OpenStudy (anonymous):
In experiments where growth is affected, the experiment can be controlled by assigning different fertilizers to different pots. she right
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