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    Question

    The ozone layer in the atmosphere is at a height of

    about            .
    A 25 km Correct Answer Incorrect Answer
    B 50 km Correct Answer Incorrect Answer
    C 100 km Correct Answer Incorrect Answer
    D 200 km Correct Answer Incorrect Answer

    Solution

    Ozone is mainly found in two regions of the Earth's atmosphere. Most ozone (about 90%) resides in a layer that begins between 10 to 17 kilometers above the Earth's surface and extends up to about 50 kilometers.

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