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      Question

      Which region of Earth's atmosphere is the coldest?

      A Mesosphere Correct Answer Incorrect Answer
      B Ionosphere Correct Answer Incorrect Answer
      C Exosphere Correct Answer Incorrect Answer
      D Troposphere Correct Answer Incorrect Answer

      Solution

      The mesosphere is known as the coldest layer of Earth's atmosphere. Temperatures here can plummet to as low as -143 degrees Celsius (-225 degrees Fahrenheit), making it a region of intense cold within the atmospheric layers.

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