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
Inter-Tribal Environmental Council jurisdictional boundaries in Oklahoma. The criteria pollutants being monitored include carbon monoxide, ozone, sulfur dioxides, nitrogen oxides and particulate matter. The United States Congress authorized the Environmental Protection Agency to develop a technological assistance program for Native Americans through the Indian Environmental General Assistance Program Act of 1992. Four main components: The principal objective of the GAP program is to provide opportunities for its member tribes to assess, evaluate and develop plans to address environmental and public health issues. Tribes that desire multi-media programs that address environmental issues can receive technical assistance through the GAP program. The Environmental Protection Agency