Ascientist wants to determine which fertilizer is more effective—fertilizer x or fertilizer y. the best way for her to proceed would be to design an experiment with a. two groups of plants—a group fertilized by x and a control group with no fertilizer. b. two groups of plants—a group fertilized by y and a control group with no fertilizer. c. three groups of plants—a group fertilized by x, a group fertilized by both x and y, and a control group with no fertilizer. d. three groups of plants—a group fertilized by x, a group fertilized by y, and a control group with no fertilizer.
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Ascientist wants to determine which fertilizer is more effective—fertilizer x or fertilizer y. the b...
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