A scientist 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 Y and a control group with no fertilizer.

B. two groups of plants-a group fertilized by X 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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4 June, 14:45

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Nick Bowman · Answer 1

D, because that way you'd have an original to compare both to, and you have both the X and Y fertilizers to compare too.