Oxygen enters the lungs, then passes through the alveoli and into the blood.
Answer:
12 to 16
Explanation:
The normal respiratory rate for adults is 12 to 16 breaths per minute.
A mechanical wave is created when a medium allows the transfer of energy, or moves back and forth or up and down. It <span> is a </span>wave that is a vibration in matter, transferring energy through a material. <span>While </span>waves<span> can move over long distances, the movement of the medium of transmission is limited. Hope this answers the question.</span>
