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For about how many years of geologic time have humans existed on earth
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Blood has traveled from the heart to the toes. which describes the next step of the circulation process?
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What kind of bond is created by the attraction between atomic particles of opposite charge? ionic bond hydrogen bond covalent bond nuclear bond
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Suppose you are provided with an actively dividing culture of e. coli bacteria to which radioactive thymine has been added. what would happen if a cell replicates once in the presence of this radioactive base?
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Biology, 22.06.2019 14:30
Alexa is preparing for a presentation by creating note cards identifying keywords that describe various features of each type of plate boundary. which words apply to all three of the convergent boundaries?
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For about how many years of geologic time have humans existed on earth...
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