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oksano4ka [1.4K]
3 years ago
5

What part of the digestive system first causes chemical changes to food?

Biology
2 answers:
zhannawk [14.2K]3 years ago
5 0

Answer:

b. saliva in the mouth

Explanation:

saliva contains enzymes that help break down food

valina [46]3 years ago
4 0
I think it would be a because even though saliva is also helping to break down enzymes, you need your teeth in order to first break apart the larger pieces. Hope this helps:)
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