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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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