Environmental policy of the United States from the sun. Chlorofluorocarbons (CFCs), which were used beginning in the 1930s in a number of important areas, were determined in 1974 to be responsible for much of the depletion of the ozone layer. Four years later, the EPA and FDA banned CFCs in aerosol cans. As research in the 1980s indicated that the problem was worse than before, and revealed a controversial massive hole in the ozone layer over Antarctica, three international agreements were made to reduce the ozone-damaging substances- the Vienna Convention, the 1987 Montreal Protocol, and a third agreement in 1990 in London. In the United States,
Full-service community schools in the United States magnet schools, and alternative schools, the full-service community school model is one of many educational reform efforts that are intended to increase student achievement, but the full-service community school model specifically focuses on the development of the community as a whole. A charter school receives public funds but is not subject to all of the rules, regulations, and statutes public schools must adhere to. A charter school is accountable to what is sent forth in its individual charter. A school voucher is a certificate issued by the government to allow families to apply it the cover the tuition at a