Answer:
Serotonin
Explanation:
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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:
it is every organisms goal to "survive and repopulate" therefore, with natural selection the weaker organisms die because they did not possess the traits necessary to survive, and the strong survive and repopulate
Explanation:
Answer:
What is the most in danger from the effects of overfishing?
Animals that are normally eaten by fish.
Explanation:
There will be distruption of the food chain as the feeding pattern of those that feeds on fish changes as a result of scarcity of fish in the ocean due to overfishing which poses a danger
Answer:
from 60 to 100 beats per minute
