Respuesta :
mechanical digestion occurs in the mouth and the esophagus. it begins in the mouth when your saliva breaks down the food, then your tongue pushes it toward the back of the throat, where it travels down the esophagus as a bolus (a small ball).
Answer:
mouth and stomach
Explanation:
Mechanical digestion begins in your mouth with chewing, then moves to churning in the stomach and segmentation in the small intestine