Which of the following is considered a macronutrient for plants?

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A Zinc
B Iron
C Potassium
D Boron

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Answer: C. Potassium

Plants require 16 essential nutrients. Macronutrients like Potassium (K), Nitrogen, and Phosphorus are needed in large quantities. Zinc, Iron, and Boron are micronutrients

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Which of the following is considered a macronutrient for plants?

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