📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!


    Question

    What is the historical comparison period for the current

    CO₂  levels, as mentioned by WMO?
    A 1-2 million years ago Correct Answer Incorrect Answer
    B 2-3 million years ago Correct Answer Incorrect Answer
    C 3-5 million years ago Correct Answer Incorrect Answer
    D 5-6 million years ago Correct Answer Incorrect Answer
    E 6-8 million years ago Correct Answer Incorrect Answer

    Solution

    According to the WMO, current CO₂  levels were last seen 3-5 million years ago, when temperatures were 2-3°C warmer and sea levels were significantly higher.

    Practice Next
    ask-question

    Not sure which exam is best for you Talk to our expert

    Get My Free Call