Question

what is mechanical digestion? the process of breaking down food using machines outside the body the process of breaking down food by physically mashing or grinding it into smaller pieces the process of physically transporting food to cells throughout the body the process of breaking down food using chemical reactions

Explanation:

Mechanical digestion involves physical processes like chewing (mashing) and grinding in the mouth and churning in the stomach to break food into smaller pieces, increasing its surface - area for further chemical digestion. It does not involve chemical reactions or transporting food to cells. It occurs inside the body, not outside using machines.

Answer:

The process of breaking down food by physically mashing or grinding it into smaller pieces