I thought it was B but I’m probably incorrect
<span>When the diaphragm contracts and moves lower, the chest cavity enlarges, reducing the pressure inside the lungs. To equalize the pressure, air enters the lungs. When the diaphragm relaxes and moves back up, the elasticity of the lungs and chest wall pushes air out of the <span>lungs. hope this helps</span></span>
I swear it's the cell membrane.. I'm not sure though
Metabolic wastes are substances left over from metabolic processes. The answer is true.
MRNA transfers genetic information in the nucleus from the DNA to the cytoplasm because DNA never leaves the nucleus
