List of environmental topics (O) 4108015 191605644 2008-02-15T08:10:19Z Alan Liefting 36352 major reduction of list to suit new article name. {{TopicTOC-Environmental}} This is a '''list of environmental topics'''. They relate to the effect of human activity on the environment. ==O== *[[obsolescence]] (affecting [[waste]]) *[[Obsolescence Management]] *(Ocean Climate Laboratory) [[National Oceanographic Data Center]] (NODC) (in the United States) *[[ocean colonization]] *[[Ocean Dumping Act]] *[[Ocean Dumping Ban Act]] *[[Office of the Gene Technology Regulator]] (in Australia) *[[Ogallala Aquifer]] *[[Oglala National Grassland]] *[[oil desulfurization]] *[[oncomouse]] (a type of genetically modified laboratory mouse) *[[one-child policy]] *(one-hundred-thousand-year problem) [[100,000-year problem]] ("a discrepancy between the climate response ... and the forcing from the amount of incoming solar radiation") *[[Ontario Nature]] (formerly Federation of Ontario Naturalists [FON]) (in Canada) *[[open pollination]] *[[Operation Grapple]] (in 1950s) (British nuclear testing operation) *[[Operation Plumbbob]] (nuclear test series) *[[organic certification]] *[[organic electronics]] (plastic electronics) *[[organic farming]] (see also [[list of organic gardening and farming topics]]) *(organic fertilizer: included in) [[fertilizer]] (see under [[fertilizer#Organic fertilizers|Organic fertilizers]]) *[[organic food]] *(organic garden: see) [[list of organic gardening and farming topics]] *[[organic gardening]] (see also [[list of organic gardening and farming topics]]) *[[organic horticulture]] *[[organic lawn management]] *[[organic light-emitting diode]] (OLED) *[[organic movement]] *(organic produce: see) [[organic food]] *[[organochlorine compound]] ("many are toxic") *[[Our Common Future]] (report from the UN) *''[[Our Posthuman Future]]: Consequences of the Biotechnology Revolution'' (book) *[[over-consumption]] *[[overpopulation]] *[[hypoxia (environmental)|oxygen depletion in the environment]] *[[ozone-oxygen cycle]] *[[ozone depletion]] *[[ozone depletion potential]] [[Category:Lists of environment topics]] [[Category:Topical indexes|Environment topics:O]]