Public expenditure can be classified on the basis of benefits they confer on different groups of people. Common benefits to all: Expenditures that confer common benefits on all the people. For example, expenditure on education, public health, transport, defence, law and order, general administration.
More than 4.5 million American lives are saved each year by a single, selfless act--donating blood. In fact, just one pint of blood can help save up to three lives. Although 60 percent of the U.S. population is eligible to donate blood, only 5 percent actually do. There are several reasons for the low turnout, says Ronald Sacher, MD, Hoxworth Blood Center director and professor of internal medicine and pathology, ranging from nasty weather to discouraging myths.
If all blood donors gave two to four times a year, it would help prevent blood shortages. 17. You could donate 48 gallons of blood if you began at 17 years old and donate every 56 days until you reach 76 years old.