• In some cases it may have several negative environmental impacts (e.g., increased emissions of nitrous oxide (N20) and nitrogen oxides (NOx) to air, ground, and water and changes in soil processes).

• Included are anthropogenic emissions of carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), sulfur hexafluoride (SF6), hydrochlorofluorocarbons (HCFCs), chlorofluorocarbons (CFCs), the aerosol precursor and the chemically active gases sulfur dioxide (SO2), carbon monoxide (CO), nitrogen oxides (NOx), and non-methane volatile organic compounds (NMVOCs).

• The present composition of the Earth 's atmosphere is dominated by nitrogen and oxygen whose roles in the regulation of the climate are minor.