Answer:
I dont think it can not be cure Bone marrow transplant, also known as stem cell transplant, offers the only potential cure for sickle cell anemia. ... As a result, treatment for sickle cell anemia is usually aimed at avoiding crises, relieving symptoms and preventing complications.
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The answer is
B........................................
Prior knowledge
Hope I helped! ( Smiles )
That is TRUE, which makes updating maps extremely easy and convenient, not to mention it's the key element in GPS systems.