Please Explain completely Why most of blood is plasma and wh

Please Explain completely:

Why most of blood is plasma and what\'s the most common leukocyte and by how much?  

Solution

Plasma constitute 55% of total blood volume .This aqueous solution contain 92% water it also contain blood protein including serum albumin blood clotting factor and immunoglobulin. Plasma circulates respiratory gases and it also contain fibrinogen clotting protein .Basophil is the least common and neutrophil is the most common.