Answer:
The nasal cavity and its mucous have two primary purposes in the process of breathing: Role as a Passage for Inhaled Air: During inhalation, air enters through the nostrils and passes via the nasal cavity into the pharynx and larynx, the next sections in the respiratory tract, to eventually reach the lungs.
Explanation:
By pushing on the top of it and the water or substance will get into it
Caleb’s immune system will have the experience of getting rid of this antigen and know exactly what to do to overcome it efficiently.