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Biology, 20.02.2020 07:34 janiyahlanae66
The lower esophageal sphincter surrounds the upper opening into the stomach. If this sphincter failed to properly constrict, there might be a problem with .
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Biology, 22.06.2019 03:30, linag969p9xeno
Which is the correct order in the scientific process? ask a question ® form a hypothesis ® make an observation ask a question ® make an observation ® form a hypothesis make an observation ® form a hypothesis ® ask a question make an observation ® ask a question ® form a hypothesis
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The lower esophageal sphincter surrounds the upper opening into the stomach. If this sphincter faile...
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