Living organisms require at least 27 elements of which 15 are metals. Among these, those required in major quantities include
Options
(a)Potassium, Manganese, Molybdenum & Calcium
(b)Potassium, Molybdenum, Copper & Calcium
(c)Potassium, Sodium, Magnesium & Calcium
(d)Sodium, Magnesium, Copper & Manganese
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