what is digestive system and respiratory system
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In the case of the respiratory system the major materials moving through it are oxygen and the waste product carbon dioxide. The digestive and respiratory system share some common spaces. The digestive system is composed of the mouth, pharynx, esophagus, stomach, small intestine, large intestine, rectum and anus.
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digestive system helps to digest the food by it's process.
respiratory system helps to take o2 and reales co2
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