what forms acid rain
Acid rain comes in many forms: rain, snow, sleet, hail and fog (wet deposition), and as deposits of acid particles, aerosols and gases (dry deposition).It is formed when sulfur dioxide (SO 2) and nitrogen oxides (NO x) combine with moisture in the atmosphere to produce sulfuric acid and nitric acid.Several sources that contribute to creating acid rain include: 1  Combustion of fossil fuels (coal, oil, natural gas, wood, etc.) for energy.t is formed when sulfur dioxide (SO 2) and nitrogen oxides (NO x) combine with moisture in the atmosphere to produce sulfuric acid and nitric acid. Several sources that contribute to creating acid rain include: 1  Combustion of fossil fuels (coal, oil, natural gas, wood, etc.) for energy.