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
Natural Bridges National Monument Solar Power System and maintenance costs by using a photovoltaic system. Also the environmental benefits include a reduction of air and noise pollution compared to diesel generators. The emissions reductions are estimated to be about of sulfur oxides, of nitrogen oxides, of carbon dioxide, and of carbon monoxide annually. Natural Bridges National Monument Solar Power System Natural Bridges National Monument Solar Power System is a demonstration plant using solar cells as the energy source. When it was dedicated in June 1980 by the Utah Governor, it was the world's largest solar plant at 100 kW. It is located in the southeastern portion of