B is the final answer! :)
Answer:
Your answer is A) Adenosine triphosphate (ATP).
The Mesozoic era follows the end of the Paleozoic era.
The correct answer is: Heartburn often results when the gastroesophageal sphincter fails to close properly.
The gastroesophageal sphincter is a muscle located at the bottom of the esophagus that has to be relaxed in order to allow food to flow down into the stomach. After it contracts (tightens), the food and the stomach acid can’t flow back up into the esophagus.
When the gastroesophageal sphincter fails to close properly acid reflux occurs and causes the heartburn.
Answer: The answer is runoff.
Explanation: Runoff is water “running off” the land surface.
