Acid rain Acid rain Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH). It can have harmful effects on plants, aquatic animals and infrastructure. Acid rain is caused by emissions of sulphur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. Some governments have made efforts since the 1970s to reduce the release of sulphur dioxide and nitrogen oxide into the atmosphere with positive results. Nitrogen oxides can also be produced naturally by lightning strikes, and sulphur dioxide
Environmental issues in Georgia pollutants monitored in Georgia include particulate matter (total suspended particulates [TSP]), carbon monoxide (CO), nitrogen oxides (NO2, NO), and sulfur dioxide (SO2). In Georgia the public transport system is not sufficiently developed. A significant proportion of the population uses private vehicles as the preferred mode of transport. The number of private vehicles has grown rapidly over the past decade and has almost doubled in the last five-year period. Traffic has increased followed by industrial sources. The country has seen a sharp rise in the number of old, dirty diesel vehicles on the road over the last decade and pollution testing