Explanation:
saliva
Chewing breaks down food particles and mixes them with saliva. Saliva contains the starch-digesting enzyme amylase and a slippery protein called mucin that helps to lubricate the food particles for easier swallowing.
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Explanation:
saliva
Chewing breaks down food particles and mixes them with saliva. Saliva contains the starch-digesting enzyme amylase and a slippery protein called mucin that helps to lubricate the food particles for easier swallowing.