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Hakeem is testing the effects of sunlight on samples of soil. Which of these actions would introduce confounding variables into Hakeem’s experiment?
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Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat
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Which of the following is an eon in the time scale? phanerozoic proterozoic archean all of the above
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An uncomfortable feeling in the ears when descending in an airplane is caused by changes in air pressure on the: a. inner ear b. middle ear c. eardrum d. hammer/anvil
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Hakeem is testing the effects of sunlight on samples of soil. Which of these actions would introduce...
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