In humans, the process of digestion begins in the where food is into small pieces by the teeth. The helps by moving these pieces around. These pieces are covered by , or spit. The saliva makes the food slippery so that it is easier to . It also helps to break down the food.

Explanation:

digestion begins in the mouth Where food is chewed into smaller pieces by the teeth the Tongue helps by moving these pieces around These pieces are covered by saliva Or spit saliva makes the food slippery so It's easier to swallow

to defend?

explanation:

the answer is c. resource depletion