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


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