Copper is not a macronutrient as it is needed only in trace amounts, while magnesium, nitrogen, and sulfur are macronutrients required in larger quantities for plant growth. The classification of nutrients ensures appropriate nutrient management in agriculture and health. ;
Copper is not a macronutrient as it is needed only in trace amounts, while magnesium, nitrogen, and sulfur are macronutrients required in larger quantities for plant growth. Hence, the correct answer is A. copper .
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