Which one of the following elements is not required by plants for their healthy normal growth

Options :
  1. Ca
  2. Mg
  3. Pb
  4. Fe
Answer and Explanation :-

Answer: Option 3

Explanation:

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La rutina no está tanto en las cosas como en nuestra incapacidad para crear a cada momento un vínculo original con ellas, en nuestra tendencia a leerlas por la falsilla de lo rutinario, de lo ya aprendido. Hay que seguir dejando siempre abierta la puerta al cuarto de jugar.
-Carmen Martín Gaite El cuento de nunca acabar.