Is the decomposition of food by bacteria in our digestive systems aerobic or anaerobic?

Question

Quizplus · Accepted Answer

Our digestive system is mostly anaerobic because bacteria decompose food in an oxygen-free environment. While there may be some aerobic processes in the mouth and esophagus due to air intake, the majority of digestion occurs in the stomach and intestines where very little oxygen is present. The gas generated in our intestines is actually a result of anaerobic bacteria breaking down certain types of carbohydrates, not aerobic respiration. Additionally, whether we rest or not after a meal has no bearing on the type of digestion occurring in our bodies.

Is the Decomposition of Food by Bacteria in Our Digestive