explain the importance and need of human blood
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Blood is made up of RBC'S, WBC'S and Platelets.
(i)It carries oxygen to all the parts of the body(RBC) and also carries carbon dioxide back to the lungs.
(ii) It contains platelets which help in the clotting of blood.
(iii) it contains WBC's which help in providing immunity to the body.i.e. Strength to resist infections...
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