Biology
Which one of the following statements regarding haemoglobin is correct?

Haemoglobin is only used for blood clotting and not for carrying gases
Haemoglobin present in RBC can carry only oxygen but not carbon dioxide
Haemoglobin of RBC can carry both oxygen and carbon dioxide
Haemoglobin of RBC can carry only carbon dioxide

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Biology
Kwashiorkor disease in children is caused by

Sufficient vitamins but deficient fats in diet
Sufficient carbohydrates and fats but deficient proteins in diet
Sufficient fats but deficient vitamins in diet
Sufficient carbohydrates but less fats in diet

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