Weathering release occurs of Ca and other ions into surface waters. Rainfall is acidic because atmospheric carbon dioxide dissolves in the rainwater producing weak carbonic acid. In unpolluted environments, the rainfall pH is around 5.6. Acid rain occurs when gases such as sulfur dioxide and nitrogen oxides are present in the atmosphere. These oxides react in the rain water to produce stronger acids and can lower the pH to 4.5 or even 3.0. Sulfur dioxide, SO, comes from volcanic eruptions or from fossil fuels, can become sulfuric acid within rainwater, which can cause solution weathering to the rocks on which it
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