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Casts and mold are a type of preservation where the original material decays, leaving a mold in surrounding rock that can be filled with another sediment a. true b. false
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Anormal strand of dna is shown below, followed by the same strand of dna after mutations have occurred.
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Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d
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Which of the following refers to a community of living organisms and the way they interact with nonl...
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