Question

in the digestive system, two types of digestion take place. the first type, (4)____ begins in the mouth. it involves chewing and breaking down food into small pieces. the second type, (5)__, breaks things down into simple, usable nutrients. the digestive system uses (6)__ to aid in breaking things down. food and air move through the (7)__ to the rest of the system, where theyre moved through by (8)____.

Explanation:

• (4) Mechanical digestion starts in the mouth with chewing.
• (5) Chemical digestion breaks food into simple nutrients.
• (6) Enzymes help in breaking down food.
• (7) Pharynx is the passage for food and air.
• (8) Peristalsis moves food through the digestive system.

Answer:

(4) Mechanical digestion
(5) Chemical digestion
(6) Enzymes
(7) Pharynx
(8) Peristalsis