1.

in man and mammals , air passes from outside into the lungs throughA. Nasal cavity , larynx , pharynx, trachea bronchi , alveoliB. Nasal cavity , larynx , pharynx , trachea , bronchioles, alveoliC. nasal cavity , pharynx , larynx , trachea , bronchioles , bronchi , alveoliD. Nasal cavity ,pharynx , larynx , trachea, bronchi , bronchioles , alveoli

Answer» Correct Answer - d


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