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A scientist, who wants to study the effects of nitrogen on wheat plants, sets up an experiment with 4 groups of wheat plants: group A gets 20 pounds per acre, group B gets 40 pounds per acre group C gets 60 pounds per acre, and group D gets 0 pounds per acre. Which of the following control group?
D) group D T/F
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A scientist, who wants to study the effects of nitrogen on wheat plants, sets up an experiment with...
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