I believe so but am not postitive
Answer:
Mechanical digestion involves physically breaking the food into smaller pieces. Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells. Chemical digestion begins in the mouth when food mixes with saliva.
Explanation:
The exercise principle that states that a muscle must have more resistance than it is accustomed to in order to be conditioned is called the Muscle adaptation principle.
