Answer:
Explanation: Mechanical digestion is the breaking down of food materials or substance into smaller particles.
Its aids digestive by breaking down the food substance into smaller fragments that can be easily asbsorb and digested. This is done by chewing with mouth, churning with stomach and segmentation.
The mouth breaks down the food by chewing and grinding with teeth into fine particles after which it is rolled down through the throat into the stomach.
The stomach mixes the food substance with enzymes. Digestion takes place in the stomach and segmentation enables the physical absorption of the food substance.
