Final answer:
Water is primarily absorbed in the small intestine and colon through concentration gradients in the digestive system.
Explanation:
Water Absorption in the Digestive System
Water absorption in the digestive system occurs primarily in the small intestine and colon. About 90% of water is absorbed in the small intestine, driven by concentration gradients. The colon reabsorbs water as undigested food enters from the small intestine, converting chyme into feces.
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