An element playing an important role in nitrogen fixation is:

  • A
    Molybdenum
  • B
    Copper
  • C
    Manganese
  • D
    Zinc

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Which mineral elements are essential for the structure of chlorophyll and the synthesis of chlorophyll?

....... activates various enzymes,especially carboxylases.

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Analogous type questions:
$(1)$ Macronutrient : Nitrogen :: Micronutrient : ....
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