One reason for a practice to continue marketing strategies is that people relocate to and from the area

In the early 1900s dental patients would have to be sent to hospitals or a physician's office to have a dental radiograph exposed

Indicate whether the statement is true or false

What are the microscopic air sacs that exchange oxygen and carbon dioxide through the processes of inspiration and expiration?

A) larynx B) trachea C) alveoli D) pharynx