The main ingredient in bubblegum was a substance called chicle, which is a latex sap that comes from a tree in Central America. After World War II, chemists developed a synthetic rubber that has the same chemical properties as chicle.
Answer The stomach secretes acid and enzymes that digest food. Ridges of muscle tissue called rugae line the stomach. The stomach muscles contract periodically, churning food to enhance digestion. The pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.
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