why is blood needed by all the parts of a body?
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not by all the parts blood is needed
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Blood is needed by all the parts of the bodybecause: (i)It carries oxygen to all the parts of the body and also carries carbon dioxide back to the lungs. (ii) It carries digested food to various parts of the body for absorption. (iii) It contains platelets which help in the clotting of blood.
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