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Unit 7: Chemical and Physical Changes & Balancing Unit 7: Chemical and Physical Changes & Balancing

Unit 7: Chemical and Physical Changes & Balancing - PowerPoint Presentation

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Uploaded On 2018-12-07

Unit 7: Chemical and Physical Changes & Balancing - PPT Presentation

The Digestive System Amazing Facts We make 13 pints of saliva a day The average male will eat about 50 tons of food to sustain weight of 150 pounds A horses intestines are about 89 feet long ID: 737813

system chemical food enzymes chemical system enzymes food physical digestion digestive body nutrients interactions break intestine breaks proteins sugars

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