Answer:
In the stomach
The stomach produces hydrochloric acid. It kills many harmful microorganisms that might have been swallowed along with the food. The enzymes in the stomach work best in acidic conditions – at a low pH.
Bile
After it has been in the stomach, food travels to the small intestine. The enzymes in the small intestine work best in alkaline conditions - but the food is acidic after being in the stomach. Bile is a substance produced by the liver and stored in the gall bladder.
Step-by-step explanation:
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