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      Question

      Which element is found in the highest percentage within

      the Earth's crust?
      A Silicon Correct Answer Incorrect Answer
      B Iron Correct Answer Incorrect Answer
      C Aluminum Correct Answer Incorrect Answer
      D Oxygen Correct Answer Incorrect Answer

      Solution

      Oxygen is the most abundant element, making up nearly 47% of the crust's mass. It is followed by silicon, which accounts for about 28%.

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