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Hakeem is testing the effects of sunlight on samples of soil....
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Biology, 27.02.2020 18:56 jaimon8729
Select all the correct answers.
Hakeem is testing the effects of sunlight on samples of soil. Which of these actions would introduce confounding variables into Hakeem’s experiment?
He tests a theory that’s already been established.
He tests multiple hypotheses at a time.
He uses identical specimens when completing multiple trials.
He adjusts the independent variable and records the effects.
He uses different types of soil in each of his samples.
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