The answer is
C
Wind, air, and living things
I would say A because your talking about climate and terrain and i think of nature
Answer:
There are 3 major parts of the respiratory system: the airway, the lungs, and the muscles of respiration. The airway, which includes the nose, mouth, pharynx, larynx, trachea, bronchi, and bronchioles, carries air between the lungs and the body's exterior.
