Which of the following groups contains only macro-nutrients?
BIOLOGY
WAEC 2004
Which of the following groups contains only macro-nutrients?
- A. phosphorus, nitrogen and molybdenum
- B. manganese, copper and zinc
- C. boron, sulphur and iron
- D. calcium, magnesium and potassium
Correct Answer: D. calcium, magnesium and potassium
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