Discussion
Consider the following greenhouses gases :
1. Methane (CH4)
2. Carbon dioxide (CO2)
3. Nitric oxide (NO)
4. Hydrochlorofluorocarbons (HCFCs)
5. Perfluorocarbons (PFCs)
6. Sulphur hexafluoride (SF6)
Which of these are covered under the Kyoto Protocol ?
Answer: A
The gases covered are 1, 2, 5 and 6.
The Kyoto Protocol's Annex A lists six greenhouse gases: carbon dioxide, methane, nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs) and sulphur hexafluoride. Nitrogen trifluoride was added for the second commitment period.
Nitric oxide (NO) is not the Kyoto gas; the listed nitrogen gas is nitrous oxide. Hydrochlorofluorocarbons (HCFCs) are ozone-depleting substances controlled under the Montreal Protocol, so they are left out of Kyoto. That rules out options containing 3 or 4.
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