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1. |
Living organisms require at least 27 elements of which, 15 are metals, Among these, those required in major quantities, include |
A. | Potassium, maganese, molybdenum and calcium |
B. | Potassium, molybdenum, copper and calcium |
C. | Potassium, sodium, magnesium and calcium |
D. | Sodium, magnesium, copper and magnanees |
Answer» D. Sodium, magnesium, copper and magnanees | |