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1.How often is blood needed in the U.S.? (50 points)

2.If a person lives to age 72, how likely is it that they will require a blood transfusion in their lifetime?(100 points)


3.How long does it really take for your blood to be collected when you donate? (250 points)


4.How long of a shelf life do platelets have? (500 points)


5.Let’s end with a fun one. Assuming each mosquito sucked only once, how many would it take to completely drainyour body of blood? (1,000 points)