9. Why is blood needed by all the parts of a body?
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Explanation:
Blood is a fluid connective tissue which has haemoglobin in it. This haemoglobin binds with oxygen to form oxyhaemoglobin . When the blood reaches the cells of different body parts, its leaves its oxygen there to enable all cells to respire.
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body is needed to all parts of the body because:(i)it carries oxygen to all the parts of the body and also carries carbon dioxide back to all the lungs.(ii) it carries digested food to various parts of the body for absorption.(iii) its contains platelets which help in the clotting of blood
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