Question

A scientist is testing the effects of fertilizer on peanut production. He plants 4 peanut plants and applies a different amount of fertilizer to each plant. Two of the plants die. Can he conclude that the amounts of fertilizer used on those plants were lethal? What other factiors might have affected the results
Ms. Sue
No.

Four plants are not enough for a valid experiment. Besides, the problem doesn't state that the two plants that died had the most fertilizer.

Lack of sunlight and water, plus an abundance of pollution are but three possible reasons these plants died.

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