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      Question

      "Rockwool" is a growing medium made

      from:
      A Crushed rocks Correct Answer Incorrect Answer
      B Molten basalt rock spun into fibers Correct Answer Incorrect Answer
      C Sheep's wool Correct Answer Incorrect Answer
      D Plastic foam Correct Answer Incorrect Answer

      Solution

      It is an inert, sterile medium with high water-holding capacity, widely used in hydroponics. It provides an ideal environment for root anchoring and oxygenation.

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