Fossil fuel percent of [its] weighted emissions in 1998. Combustion of fossil fuels also produces other air pollutants, such as nitrogen oxides, sulfur dioxide, volatile organic compounds and heavy metals. According to Environment Canada: "The electricity sector is unique among industrial sectors in its very large contribution to emissions associated with nearly all air issues. Electricity generation produces a large share of Canadian nitrogen oxides and sulphur dioxide emissions, which contribute to smog and acid rain and the formation of fine particulate matter. It is the largest uncontrolled industrial source of mercury emissions in Canada. Fossil fuel-fired electric power plants also emit
Nitrogen dioxide poisoning which nitrogen dioxide constitute one of the pollutants. While over 50% of the disease that results from these pollutants are common in developing countries and the effects in developed countries is also significant. An EPA survey in the U.S. suggests that 16 percent of United State's housing units are sited close to an airport, highway or railroad increasing in the United States the exposure risk of approximately 48 million people. A feasibility study of the ozone formed from the oxidation of nitrogen dioxide in ambient air reported by the WHO suggested that daily deaths of 1 to 2% is attributed