I need to explain how food is digested and how the nutrients/energy from food is transported through the body, I need to also add the role of the muscular, circulatory, and digestive systems, and how they play into this process as well.

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Answer:

ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and defecation, nutrient absorption, and elimination of indigestible food. The mechanical breakdown of food occurs via muscular contractions called peristalsis and segmentation.

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