There are two kinds of digestion: mechanical and chemical. 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.
The answer is B:Directional beacons
Essential Community Services
Answer:
b
Explanation:
Because im a upper high school student i dont have much time to exercise
No I don't think so .. But I could be wrong hope this helps !:-)
