Locate and name 3 of the circular muscles that control the movement of food through the system

Peristalsis Is the Contraction of Muscle Tissue That Helps Move and Break Down Foodstuffs. The walls of the alimentary canal include layers of smooth muscle controlled by the autonomic nervous system. Alternating contraction and relaxation of these muscles is called peristalsis.

Explanation:

they float because they are less dense than the water itself

something denser than water, like a rock, will sink to the bottom