Which group was at the top of the caste system

The friction red blood cells encounter when moving past each other. cardiac output: the amount of friction blood encounters during flow through blood vessels. blood pressure: the force of the blood against the vessel wall. blood viscosity: the volume of blood pumped out by one ventricle each minute.

During endocytosis, cells expel what they don't need take in what they need shrink due to loss of water

The cluster of developing cells from conception until birth is called an