Microbiology is the study of microbes..
Answer:
By providing loans so people can open businesses
Explanation:
During inhalation, the diaphragm and rib muscles contract, increasing the volume of the lungs. Air enters the nose or mouth and flowsdown the trachea, bronchi, and bronchioles, and into the alveoli.During exhalation, the diaphragm and rib muscles relax, decreasing the volume of the lungs. Air leaves the alveoli and flows up the<span>bronchioles, bronchi, and trachea, and exits through the nose or mouth</span>
The helpful bacteria and The pH balance