The intestines use a process called peristalsis to contract and expand, which is what drives the food forward through the digestive system. Nutrients that the body needs for optimal functioning are absorbed by the walls of the smaller intestine and are transported by the bloodstream to every part of the body.
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Answer:
The intestines use a process called peristalsis to contract and expand, which is what drives the food forward through the digestive system. Nutrients that the body needs for optimal functioning are absorbed by the walls of the smaller intestine and are transported by the bloodstream to every part of the body.
Explanation: