by 
Anonymous
ANSWERS: 3
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DO YOUR OWN HOMEWORK! And stop shouting...
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chemical digestion is where your stomach dissovles the food in your mouth by saliva, or when the enzymes and bile break it down in the stomach. mechanical digestion is when you chew the food using your teeth, adn when your esophagus swallows the food using perastalsis
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Mechanical digestion is where the food is physically broken into smaller pieces. This is what happens when you chew your food and does not result in a change in the composition of your food. Chemical digestion is the actual chemical breakdown of your food. This is caused by the various digestive juices (saliva, stomach acid, etc.) as they react with your food.
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