2. All food must be made into blood.
3. Changing food to blood is digestion.
4. Cooking softens food and makes it taste good.
5. Food is ground fine in the mouth, and mixed with saliva to form a paste. Some of its starch is changed to sugar.
6. If food is only half chewed the stomach has to grind it.
7. When we swallow, the tongue pushes the food into a bag back of the mouth and the bag squeezes it down a long tube to the stomach.