Answer:
i am pretty sure its indicator
<span>Ventilation.
Ventilation is used to identify the mechanical movement of gas or air into and out of the lungs. (1232)</span>
White blood cells are cells found in blood that "fight" pathogens when they enter your body (when they manage to go trough your skin).
Answer: D. none of the above.
Hope it helped,
Happy homework/ study/ exam!
The Prime Meridian separates the Western and Eastern Hemispheres . The Equator separates the Northern