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Which of the following macronutrients is used in fertilizers?

AN

BO

CP

DK

Answer:

D. K

Read Explanation:

  • Nitrogen, Potassium and Phosphorus are important constituent of fertilizers.

  • They are required in abundance by the plants.

  • Oxygen is not used in artificial fertilizers.

  • They in fact interfere with the process of nitrogen fixation carried out by cyanobacteria.

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