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    • Question

      According to the WMO, what concentration of CO ₂ was

      recorded in 2023, representing 151% of pre-industrial levels?
      A 380 ppm Correct Answer Incorrect Answer
      B 400 ppm Correct Answer Incorrect Answer
      C 420 ppm Correct Answer Incorrect Answer
      D 440 ppm Correct Answer Incorrect Answer
      E 460 ppm Correct Answer Incorrect Answer

      Solution

      The World Meteorological Organization reported a CO ₂ concentration of 420 ppm in 2023, marking an increase driven by fossil fuel emissions and other factors.

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