Question

2.
Living organisms require at least 27 elements, of
which 15 are metals. Among these, those required in
major quantities, include
[1996]
(a) potassium, manganese, molybdenum and
calcium
(b) potassium, molybdenum, copper and calcium
(c) potassium, sodium, magnesium and calcium
(d) sodium, magnesium, copper and manganese​

Answer 1

Explanation:

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