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Kristen cut her hand on a piece of glass. as the blood clots, how do white blood cells prevent bacteria on the glass from infecting her body ?
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The amount of radioactive isotopes contributing heat to earth is greater now than it was when earth was newly formed. question 20 options: true false
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Kristen cut her hand on a piece of glass. as the blood clots, how do white blood cells prevent bacte...
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