List of environmental topics (O)

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 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
*oxygen depletion in the environment
*ozone-oxygen cycle
*ozone depletion
*ozone depletion potential