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      Question

      Which gas is most abundant in Earth's

      atmosphere?
      A Oxygen Correct Answer Incorrect Answer
      B Nitrogen Correct Answer Incorrect Answer
      C Carbon Dioxide Correct Answer Incorrect Answer
      D Hydrogen Correct Answer Incorrect Answer
      E None of the above Correct Answer Incorrect Answer

      Solution

      Nitrogen makes up about 78% of Earth's atmosphere, making it the most abundant gas.

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