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Radiometric dating is used to tell the absolute age of materials by studying the decay rate of radioactive isotopes. the decay rates of isotopes are constant and are expressed as .
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If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge
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2points what do bacteria have in common with the cells of other living organisms?
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After completing your observations, is 21 days enough time to view all the phases of the moon?...
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