Internal combustion engine the atmosphere by the reaction of and volatile organic compounds in the presence of sunlight. Ground-level ozone is harmful to human health and the environment. Though the same chemical substance, ground-level ozone should not be confused with stratospheric ozone, or the ozone layer, which protects the earth from harmful ultraviolet rays. Carbon fuels contain sulfur and impurities that eventually produce sulfur monoxides (SO) and sulfur dioxide (SO) in the exhaust, which promotes acid rain. In the United States, nitrogen oxides, PM, carbon monoxide, sulphur dioxide, and ozone, are regulated as criteria air pollutants under the Clean Air Act to levels
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