A red blood cell's function is to transport oxygen.
Increases genetic variation, which in and of itself has extreme benefits such as protection against disease, capability to evolve, etc
100% (all living organisms of them have a rage of tolerance)
<span>A nurse who works in the pediatric unit of a hospital knows that there is danger due to errors in drugs, and that danger is higher for infants and children than adults because children and infants have immature kidney function and liver function.</span>