Before revision: It is either swallowed air or is produced by bacteria that normally inhabit the intestines, primarily the colon.What Causes Flatulence, bloatinjustfocuswell .com Retrieved on 2023-09-22 Belching or burping is a universal ability that works by removing gas from the stomach through the mouth.
After revision: It is either swallowed air or is produced by bacteria that normally inhabit the intestines, primarily the colon.What Causes Flatulence, bloating thesananews .com Retrieved on 2021-09-27 Belching or burping is a universal ability that works by removing gas from the stomach through the mouth.