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What protects the lining of the stomach from acidic gastric juices?
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For a comparative or experimental investigation, scientists often make a testable about a scientific question, and then they test it in the investigation. a.control b.hypothesis c.procedure d.system
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This is an active transport mechanism by which cells pump sodium and potassium ions against the concentration gradient
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The human heart has to pump the average adult's 6.2 l of blood through the body every minute. the he...
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