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Card 9 / 20:
Speculate as to what advantage(s) a complete digestive system has over an incomplete digestive system?
In a complete digestive system, food material is not mixed with waste material, so the digestion and uptake of nutrients can be more efficient. In addition, the complete digestive system allows for an orderly progression of digestion of food matter and the specialization of different zones of the digestive tract.
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