Index - O

Ocean Dumping Act, 119

Oceans
     as carbon sinks, 31
     climate and, 28
     ocean thermal energy conversion, 200
     protection of, 119

Off-stream water use, 102, 103-104

Office of Environmental Justice, EPA, 6-7

Office of Noise Abatement and Control (ONAC), 163

Oil and gas drilling, 57

Oil-producing nations, 38

Oil resources, 187-189, 188f, 190f

Oil spills, 119

ONAC (Office of Noise Abatement and Control), 163

One-time use items, 60

Organic foods, 146, 165-166

Organic Foods Production Act, 166

Oxygen-depleting substances, 113

Oxygenated fuels, 87-88, 88f

Ozonation, 147-148

Ozone, 78-81, 80f, 81f, 82t, 97-98, 175-176

Ozone depletion
     airplanes, 94-95, 96f
     chemical production and demand, 49-50
     chemicals, 45-48, 46t
     emissions, 51f
     evidence, 43-44
     human effects, 44-45
     Montreal Protocol, 47-49, 48t
     over Antarctica, 45f
     process, 46f
     public opinion, 51t
     scientific assessment, 48-49
     World Meteorological Organization (WMO), 48-49
     See also Climate change; Greenhouse effect; Greenhouse gases