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      Question

      Perlite is a nursery medium manufactured from which

      source?
      A Decayed animal matter Correct Answer Incorrect Answer
      B Natural volcanic minerals Correct Answer Incorrect Answer
      C Recycled plastics Correct Answer Incorrect Answer
      D Crushed bricks Correct Answer Incorrect Answer

      Solution

      Perlite is a volcanic glass that, when heated, expands into white, lightweight granules. It is used to keep soil loose and well-aerated.

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