daveankatie5109 daveankatie5109

29-02-2024
Biology

contestada

Respiration occurs inside the . The allow air to reach the lungs. The __ is the muscle that expands and contracts, allowing air to fill the chest cavity.
a) Lungs, diaphragm, trachea
b) Nose, bronchi, esophagus
c) Heart, alveoli, liver
d) Stomach, intestines, pancreas

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