PLS ANSWER 1. Which describes the role of villi?

They increase the surface area of the small intestine to absorb nutrients.

They produce enzymes that flow into the small intestine to break down nutrients.

They secrete bile that helps break down fat particles in the small intestine.

They move food along the digestive tract by means of peristalsis.

hey there!

so, when you eat, your teeth chew and grind food into smaller pieces. this is mechanical digestion. then reactions aided by digestive enzymes break down large food molecules into smaller molecules. this is chemical digestion. the two processes change the food into simpler substances that can be used by the body for raw materials and energy.

hope this

tobey