Harmful, i think (filling in the 20 characters)
Answer:
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.
Explanation:
Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.
Hypertension may be reduced immediately following and for almost 24 hours after cardio respiratory exercise. The correct option among all the options that are given in the question is option "b". Regular cardio respiratory exercise is very good for people suffering from hypertension. So doing such exercises will benefit people.
