Plants grow in a magnesium-deficient soil,but what happens if urea is added to the soil?

  • A
    Leaves become dark green
  • B
    Flowering occurs early
  • C
    Leaves turn yellow
  • D
    Pigments are removed from the petals

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$A$ lower concentration of a mineral element causes $...........$ and a higher concentration causes $.............$.

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In plants,where does chlorosis occur due to magnesium deficiency?

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