Under normal circumstances, every two seconds someone needs a blood transfusion. Blood transfusions are used for trauma victims - due to accidents and burns.
Blood is the living fluid that all life is based on. Blood is composed of 60% liquid part and 40% solid part. The liquid part called Plasma, made up of 90% water and 10% nutrients, hormones, etc. is easily replenished by food, medicines, etc.
Why should we donate our blood to someone in need.