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21 May, 11:12

All of the following are characteristics of heartburn except which one? A. It is a gnawing pain in the upper chest. B. It is caused by a backflow of acid from the stomach into the esophagus. C. It can damage the esophagus because it has no mucus lining to protect the esophagus. D. It subsides when a person relaxes and lies down after a meal.

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  1. 21 May, 11:25
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    D. It subsides when a person relaxes and lies down after a meal.
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