Because it is flexible. Think about it; the ribs protect both the lungs and the heart. If the ribs were solid bone all the way around then unless you constantly break your ribs you wouldn't be able to expand the cheat to breath. Additionally your lungs would constrict the heart to a degree that it would function properly.
Answer:
Carbohydrates and fats are digested in the SMALL INTESTINE
The PANCREAS secretes enzymes that aid in the digestion of carbohydrates and proteins.
The LIVER secretes bile
Bile is stored in the GALLBLADDER
Undigested food is processed into feces in the LARGE INTESTINE
Fences is then stored in the RECTUM
Until it is eliminated from the body via the ANUS
Explanation:These are what I put and got it right good luck
When you are trying to plan for safe exercise goals make sure you are not exercising to much and make sure you are eating and drinking healthy never skip a meal eat 3 times a day and you will be good
