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1. Air enters the upper respiratory system through the ______________________________, which are the openings that lead into the nasal cavity. The air moves through passageways that are formed by the ______________________________, which protrude into the cavity.

Respuesta :

Answer:

A. Nostrils

B.Larynx

Explanation:

sofiathefirst79

Answer:

nostrils larynx

Explanation:

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