About 98 percent of the mass of every living
organism is composed of just six elements
including carbon, hydrogen, nitrogen, oxygen and
(a) sulphur and magnesium
(b) magnesium and sodium
(c) calcium and phosphorus
(d) phosphorus and sulphur
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(a) sulphur and magnesium
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About 98 percent of the mass of every living
organism is composed of just six elements
including carbon, hydrogen, nitrogen, oxygen and
(a) sulphur and magnesium✔✔
(b) magnesium and sodium
(c) calcium and phosphorus
(d) phosphorus and sulphur
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