What percentage of the eligible population are active blood donors?
Select your answer:
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Other quiz:Physical › View
Students in Physical Education class must
A. change into their Physical Education clothes prior to each class.
B. obey all safety rules.
C. respect other students and teachers.
D. all of the above.
Herd Immunity › View
80% to 95% percent of people are needed for herd immunity to be effective.