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.
Donating blood is relatively simple and entirely safe, however, taking just an hour and requiring little preparation. There is little risk of adverse reaction when donating blood, and you can donate whole blood every 56 days; blood platelets every three days, up to 24 times a year. However, a few people may feel dizzy or faint during the process.