Because there are three of the four sections of the seal to promote all. Acting as the necessary nutrients to every part of the body nourished if dehydration is not able to stay alive.
Akram ratio because three-quarters of the total. Served as conductor of the necessary supply to all parts of the body if the lack of water, it can not live.
Because there are both exchange and three-quarters of all. Act as the substance necessities to nourish all parts of the body, if lack of water can not be alive.