Red source of life

People donate or give their blood away because others need extra blood when they are sick or hurt.In every country,there is at least one blood "bank"-a place where donated blood is collected and given to the hospital where patients need it?Your body needs blood to work properly and stay alive-the heart pumps blood,which carry oxygen,to all the organ and cells that need it.However people can lose lots of blood if they are injured-like in a road accident or if they go for an operation.Some illnesses also cause blood problems.In all these case,the patients need healthy blood from a blood bank. When one person's blood is given to another person ,it is called blood transfasion. THANK YOU!!!