THE LUNGS AND RESPIRATORY PICTURE BOOK

Most of us don’t think of the lungs as being a defensive or protective filter. Yet, they are the first like of defense we have. Oh, yes, they perceive danger long before we can see it as odor travels. And odor is actually small particles of the thing that we are smelling that are airborne. The lungs perform a vital job. Without healthy functioning lungs, we are dead in minutes. The Lungs and Respiratory Picture Book, must be studied and known cold.