Multiple choice

Consider the following: I. According to the UN weather agency greenhouse gases in the Earth's atmosphere reached a record high in 2006 with carbon dioxide playing an increasingly important role in global warming. II. The global average concentration in the atmosphere of carbon dioxide and nitrous oxide, was higher than ever in measurement by WMO. III. Methane, the third of the three important greenhouse gases, remained stable between 2005 and 2006. Which of the given statements are correc?

  1. Only I and II are correct

  2. Only I and III are correct

  3. Only II and III are correct

  4. All are correct
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All three statements are consistent with WMO data from 2006. Statement I correctly notes greenhouse gases reached record levels with CO2 being the primary driver. Statement II accurately states CO2 and N2O concentrations were at recorded highs. Statement III is also correct as methane levels remained relatively stable between 2005 and 2006, unlike the other two gases which showed significant increases.

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