সঠিক উত্তর হচ্ছে: ৬
ব্যাখ্যা: The targets for the first commitment period of the Kyoto Protocol cover emissions of the six main greenhouse gases, namely: Carbon dioxide (CO2), Methane (CH4), Nitrous oxide (N2O), Hydrofluorocarbons (HFCs), Perfluorocarbons (PFCs), and Sulphur hexafluoride (SF6)।
