People donate bone marrow so those in need can produce blood.
People donate bone marrow so those in need can produce(1 point)%0D%0AResponses%0D%0A%0D%0Ablood.%0D%0Ablood.%0D%0A%0D%0Abones.%0D%0Abones.%0D%0A%0D%0Amuscles.%0D%0Amuscles.%0D%0A%0D%0Avessels.
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