I believe the answer would be D. They create a temporary higher crest
Protects body organs and support
The water that is being with drinking the water and have the water doesn't. have to digested before being absorbed by the body..
The muscular system allows for movement within the body, for example, during digestion or urination. Smooth muscles in the gastrointestinal or GI tract control digestion. The GI tract stretches from the mouth to the anus. Food moves through the digestive system with a wave-like motion called peristalsis.
