In the inhalation process, we take oxygen gas, but in the exhalation process, we expel carbon dioxide gas and water vapor, so, the respiration process includes two processes which are inhalation and exhalation.
The human respiratory system consists of the nose, the pharynx, the trachea, two bronchi, and two lungs, It is called also the respiratory apparatus, the ventilatory system and it is used for the process...
We can not live without the air, It contains oxygen gas which burns the small particles of the digested food to produce energy, carbon dioxide gas and water vapor and this process is called...
