Question

fill in the blank question
in \boxed{} \boxed{}, food is physically broken down into smaller pieces.
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Explanation:

The question is about the process of physical breakdown of food into smaller pieces. In the context of digestion, the mouth (oral cavity) is where food is first physically broken down by chewing (mastication). So the two blanks should be filled with "oral" and "cavity" (or "mouth" related terms, but "oral cavity" is the anatomical term for the mouth area where physical breakdown starts).

Answer:

oral cavity