Answer:
The left atrium pumps blood into the lungs!
Explanation:
I believe that the answer to this question is energy!! because cells need energy and the reason they respire is for energy
<span>In contrast to a cerebral concussion, a cerebral contusion </span>involves physical injury to the brain tissue. Cerebral Concussion is a <span>Traumatic brain injury.</span>
Cells won’t get the nutrients they need for survival