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Physics, 21.07.2019 01:00 IntellTanito

15 ! scientist tested the effect of a fertilizer on the growth of plants. they had two sets of plants group a which gets fertilizer water & and group b which gets only water and sun (but equal amounts to group a) 1. explain how this scenario is a controlled experiment and identify the manipulated variable? 2. if the scientist only performed one experiment but it supported their hypothesis why can it not be considered a theory?

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