Environmental policy of the United States Environmental Protection Agency, were people with a history of opposition to the agency they were named to head. Since the environmental movement of the 1970s, the nature of environmental issues has changed. While the initial emphasis was on conventional air and water pollutants, which were the most obvious and easily measurable problems, newer issues are long-term problems that are not easily discernible and can be surrounded by controversy. Acid deposition, in the form of acid rain and dry deposition, is the result of sulfur and nitrogen dioxide being emitted into the air, traveling and landing in a different place, and
Lower sulfur oxides Disulfur monoxide (SO) is an unstable analogue of sulfur dioxide. Like SO as well as ozone (O), and trisulfur (S), it adopts a bent structure. The S-S bond length is 188.4pm, the S-O bond is 146.5pm and the SSO angle is 117.88. The two dipole moment components are μa = 0.875D and μb = 1.18D This species decomposes to give a polymeric sulfur oxides ("PSO's") with the approximate formula [SO]. PSO's decompose at room temperature to elemental sulfur and SO. PSO's have been proposed to be responsible for the colour of Io. Trisulfur monoxide, SO is an unstable molecule. It