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Which observation would make it inappropriate to conclude that fertilizer alone caused the growth?

Answer and explanation

Correct answer: Fertilized plants also received more water

Extra water could also affect growth so the cause is unclear. In exams identify any second factor changed at the same time.

Related tags

Cause And EffectConfounding VariableFertilizerWaterHypothesis And ExperimentationExploration: Entering The World Of Secondary ScienceExploration Entering The World Of Secondary ScienceScience

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