Do you know that the way in which blood does its job has evolved over hundred of millions of years? That is the reason why we animals have our familiar red blood. But also blue blood. And purple, and green, and even white.
Do you know that the way in which blood does its job has evolved over hundred of millions of years? That is the reason why we animals have our familiar red blood. But also blue blood. And purple, and green, and even white.
ScienceSwitch 