Enumerated powers. The enumerated powers are a list of items found in Article I, Section 8 of the U.S. Constitution that set forth the authority of Congress. In summary, Congress may exercise the powers that the Constitution grants it, subject to the individual rights listed in the Bill of Rights.
The average adult has 10-12 pints of blood. Someone needs blood every two seconds in the U.S. 40,000 pints: Amount of donated blood used each day in the U.S. and Canada. Through a process of separating blood into its individual parts, a single unit of blood can help extend the lives of as many as three people.
Every two seconds someone in the U.S. needs blood. Approximately 36,000 units of red blood cells are needed every day in the U.S. Nearly 7,000 units of platelets and 10,000 units of plasma are needed daily in the U.S. Nearly 21 million blood components are transfused each year in the U.S. The average red blood cell transfusion is approximately 3 pints.