User:Wavelength/Articles userfied/List of environmental topics/O


 * O

The items listed on this page form part of the multi-page list of environment topics.

This is a list of topics related (in whole or in part) to (a) phenomena in the natural environment which have a definite or significantly possible connection with human activity or (b) features of human activity which have a definite or significantly possible connection with the natural environment, even if the connection is made indirectly through the built environment. For example, hamster has been included because the effect on the built environment can affect the natural environment. Also, factory farming (often practiced indoors) has been associated with epidemics, which do not stay indoors.

The connections can be positive (even remedial) or negative or both. Some introduced species intended to benefit the ecosystem have acted as invasive species, damaging the ecosystem. Also, different sources of energy development have both pros and cons. Furthermore, an environmental topic can be such for multiple reasons at one time, as in the case of resource extraction and processing; commodity distribution, use, and misuse; and waste management.

Contents: O-Oa | Ob | Oc-Ocd | Oce | Ocf-Ocz | Od-Of | Og-Oj | Oi-Oik | Oil - Oil e | Oil f - Oil p | Oil q - Oil z | Oil (in hyphenated compound words) | Oila-Oilz | Oim-Oiz | Oj-Ok | Ol-Oo | Op-Oq | Or-Orf | Org-Organib | Organic | Organid-Organiz | Organj-Organz | Orgao-Ornzz | Oro-Orz | Os-Ot | Ou | Ov-Ow | Ox | Oy-Oz

O-Oa

 * Oahe Dam ("a major man-made dam")
 * O`ahu tree snail (endangered)
 * oak
 * Oakland Firestorm of 1991 (Oakland hills firestorm) (East Bay Hills Fire) (Tunnel Fire) (in California in the US)
 * oasis
 * Oasis crater
 * (Oasis of Siwa) Siwa Oasis
 * oast house
 * oat

Ob

 * (obesity virus: see) AD-36
 * (obsequent stream: see) fluvial landforms of streams
 * observational astronomy (see "light pollution" in places)
 * (Observatoire de Paris) Paris Observatory
 * observatory (see also list of observatories)
 * obsidian hydration dating
 * obsolescence (affecting waste)
 * Obsolescence Management
 * obstetric ultrasonography
 * (obtrusive lightning: see) light pollution

Oc-Ocd

 * occultation
 * occupational disease
 * occupational hygiene
 * occupational safety and health
 * Occupational Safety and Health Act
 * Occupational Safety and Health Administration (OSHA) (in the United States)

Oce

 * ocean
 * (ocean basin) oceanic basin (see also list of Oceanic basins)
 * (ocean circulation: see) ocean current
 * (Ocean Climate Laboratory) National Oceanographic Data Center (NODC) (in the United States)
 * ocean colonization
 * (ocean conveyor belt: see) thermohaline circulation
 * ocean current
 * Ocean Drilling Program (ODP)
 * Ocean Dumping Act
 * Ocean Dumping Ban Act
 * ocean energy
 * ocean exploration
 * (ocean floor) seabed (sea floor) (seafloor) (ocean floor)
 * ocean floor disposal
 * ocean liner
 * ocean surface wave
 * ocean thermal energy conversion (OTEC)
 * (ocean trench) oceanic trench (see under Water and Biosphere) (see also list of oceanic trenches)
 * ocean turbidity
 * (ocean wave: see) ocean surface wave
 * (Ocean-to-Ocean Highway) National Old Trails Highway
 * Oceania ecozone
 * (oceanic anoxic event) anoxic event
 * oceanic basin (see also list of Oceanic basins)
 * oceanic climate
 * (oceanic current) ocean current
 * oceanic dolphin
 * (oceanic rift: see) divergent boundary
 * oceanic trench
 * Oceanographic Museum (in Monaco)
 * oceanography

Ocf-Ocz

 * octane
 * octane rating
 * October 1998 South Central Texas floods (in the US)
 * October 2006 Yakima hops fire (in Washington state in the US)
 * October 2007 California wildfires (in the US)
 * October 24-26, 1997 Western Plains winter storms (in the US)

Od-Of

 * Odic force
 * odor (see under Legislative provisions associated with odors and under Types of odors)
 * off-label use (of prescribed drugs)
 * (off-label use of dextromethorphan: see) non-medical use of dextromethorphan
 * (off-piste skiing: see) backcountry skiing
 * off-road
 * (off-road bicycling: see) mountain biking
 * off-road transport
 * off-road vehicle
 * (off-roader: see) sport utility vehicle (SUV)
 * offal
 * Office of Gas and Electricity Markets (Ofgem)
 * Office of Laboratory Animal Welfare (in the United States)
 * Office of Ocean Exploration (OE)
 * Office of Oceanic and Atmospheric Research (OAR)
 * Office of the Gene Technology Regulator (in Australia)
 * (office park: see) industrial park
 * offroad racing
 * offshore construction
 * offshore powerboat racing
 * (offshore windfarm: see) wind power
 * (Ofgem) Office of Gas and Electricity Markets
 * (Ofwat [Office of Water Services]: renamed) Water Services Regulation Authority (in England and Wales)

Og-Oj

 * Ogallala Aquifer
 * (Ogasawara subtropical moist forests: see) Ogasawara Islands
 * Oglala National Grassland

Oil - Oil e

 * oil
 * (Oil - Environmental Impact: see) petroleum
 * Oil and Gas Industry metering and control system
 * (Oil and Natural Gas Commission Limited) ONGC (in India)
 * oil boom
 * (oil companies: see) list of petroleum companies
 * oil crash
 * (Oil Crises: see) energy crisis
 * (Oil Crisis: see) 1973 oil crisis
 * (oil deposits: see) oil field
 * (oil derrick: see) derrick (lifting device)
 * oil desulfurization
 * (oil diplomacy: see) petroleum politics
 * (oil drill: see) oil well
 * (oil drilling: see) oil well
 * (oil embargo crisis: see) 1973 oil crisis
 * (oil empire: see) oil imperialism theories
 * oil exploration

Oil f - Oil p

 * oil field (see also list of oil fields)
 * (Oil for Food: see) Oil-for-Food Programme
 * oil imperialism theories
 * oil industry (see also list of oil-producing states)
 * oil lamp
 * (oil of turpentine) turpentine (see especially under Hazards)
 * (oil of vitriol) sulfuric acid ("the most widely used industrial chemical")
 * (oil of wintergreen) methyl salicylate
 * (oil paint: see) painting oil
 * oil palm
 * (Oil Peak: see) Hubbert peak
 * (oil pipeline: see) pipeline transport
 * oil platform
 * Oil Pollution Act of 1990 (in the United States)
 * oil price increase of 1990
 * oil price increases of 2004 and 2005

Oil q - Oil z

 * oil refinery (see especially under Safety and environmental concerns) (see also list of oil refineries)
 * oil reserves (see also list of oil-rich countries)
 * oil reservoir
 * (oil rig: see) drilling rig
 * (Oil Rivers) Niger Delta
 * (Oil Rivers Protectorate) Niger Coast Protectorate
 * (oil sand) tar sands (bituminous sand)
 * (oil seed: see) vegetable oil (including "industrial uses")
 * oil shale
 * (Oil Shock: see) 1973 oil crisis
 * oil spill (oil slick) (see also list of oil spills)
 * oil supplies
 * (oil tanker: see) tanker
 * oil well

Oil (in hyphenated compound words)

 * Oil-for-Food Programme
 * (oil-seed: see) vegetable oil (see "industrial uses" in article)

Oila-Oilz

 * oiler (ship)
 * (oilfield) oil field
 * oilpatch
 * (oilseed rape) rapeseed
 * (oilwell) oil well

Oj-Ok

 * (Okanagan Mountain Park Fire) 2003 Okanagan Mountain Park Fire (Canadian spelling: "Okanagan")
 * Okanogan National Forest (American spelling: "Okanogan")
 * okapi (see "threatened" under Status)
 * Okapi Wildlife Reserve
 * Okefenokee Swamp (peat-filled marsh in the United States)
 * Oklahoma Tornado Outbreak (in 1999)
 * Oklo (in Gabon) (place noted for natural nuclear reactions)

Ol-Oo

 * Old Faithful Geyser
 * old growth forest (late seral forest) (ancient forest) (see also list of old growth forests)
 * Old Tropical Cyclone Names
 * (Old World rats and mice: see) Murinae
 * oldest known object on Earth
 * oleochemical
 * (oleoresin: see) resin
 * olfaction (the sense of smell)
 * oligodynamic effect
 * oligotrophic
 * omnivore
 * 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)

Op-Oq

 * open field system (in agriculture)
 * open hearth furnace (Catalan forge) (in metallurgy)
 * (open plain: see) grassland
 * open pollination
 * open-pit mining (opencast mining) (strip mining)
 * Operation Grapple (in 1950s) (British nuclear testing operation)
 * Operation Plumbbob (nuclear test series)
 * operative temperature
 * Oppenheimer-Phillips process
 * optical astronomy
 * optically stimulated luminescence (OSL) (for measuring ionizing radiation)
 * (optimal carbon tax: see) carbon tax
 * optimum population

Or-Orf

 * orangutan (see "highly endangered" under Conservation status)
 * orbital airship
 * orbital bombardment
 * (orbital debris) space debris (space junk)
 * orbital decay
 * (orbital elevator) space elevator (space bridge) (star ladder)
 * orbital engine
 * (orbital flight) orbital spaceflight
 * orbital forcing (see also Milankovitch cycles)
 * (orbital observatory: see) space observatory
 * (orbital power satellite: see) solar power satellite (SPS)
 * orbital spaceflight
 * Orbiting Astronomical Observatory (OAO)
 * orca (killer whale) (grampus) (see under Orcas and modern man)
 * orchard
 * ore
 * ore grade

Organic

 * (organic agriculture) organic farming
 * (organic ambient music: included in) ambient music (see under Organic ambient music)
 * organic certification
 * organic chemistry (see also list of organic chemistry topics)
 * organic compound
 * 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 geochemistry
 * organic horticulture
 * organic lawn management
 * organic light-emitting diode (OLED)
 * organic liquid
 * organic movement
 * organic peroxide (see under "Safety")
 * (organic produce: see) organic food
 * organic production
 * (organic radical: see) alkane (see especially under Combustion)
 * organic reaction
 * organic reduction (organic oxidation) (organic redox reaction)
 * organic salt
 * organic semiconductor
 * (organic solvent: see) solvent
 * organic synthesis
 * organicism

Organid-Organiz

 * Organisation for the Prohibition of Chemical Weapons (OPCW)
 * organisms that are dangerous to humans
 * Organization for Mine Clearance and Afghan Rehabilitation (OMAR)
 * Organization of Arab Petroleum Exporting Countries (OAPEC)
 * (Organization of the Petroleum Exporting Countries) OPEC

Organj-Organz

 * organochlorine compound ("many are toxic")
 * organometallic chemistry
 * organophosphate (OP) ("most are potent neurotoxins")
 * organosulfur compounds ("pollutants")
 * organotin (stannanes) (see "toxicity" in text of article)

Oro-Orz

 * orographic lift
 * (orographic precipitation: see) precipitation (meteorology)
 * orography
 * orthovoltage X-rays
 * Ortolan Bunting (Ortolan) (a bird species) (see "in decline" under Conservation)
 * oryx ("one of three or four large antelope species") ("now possibly extinct in the wild")

Os-Ot

 * Osborne Reef (by Florida in the US)
 * (osmobiosis: included in) cryptobiosis
 * osmosis (see under Reverse osmosis)
 * (osteofluorosis) skeletal fluorosis
 * (other countries affected by the 2004 Indian Ocean earthquake: see) countries affected by the 2004 Indian Ocean earthquake
 * Ottawa Treaty (Mine Ban Treaty)
 * Otto fuel II (OTTO fuel II) (a toxic substance)
 * (Otto-cycle engines: see) Four-stroke cycle

Ou

 * Our Common Future (report from the UN)
 * Our Posthuman Future: Consequences of the Biotechnology Revolution (book)
 * Out of Control: The New Biology of Machines, Social Systems, and the Economic World (book)
 * outback
 * outboard motors
 * (Outdoor Air Pollution:) air pollution
 * outer space
 * Outer Space Treaty
 * outer trench swell (see "earthquakes" in text of article)
 * over-consumption

Ov-Ow

 * (over-hunting: see) hunting
 * (over-lighting: see) light pollution
 * overdriven fluorescent light
 * overfishing
 * overgrazing
 * overhead cable
 * overhead line crossing
 * (overhead pylon) electricity pylon
 * overhead lines (overhead wires)
 * overhead powerline
 * (overheating) hyperthermia (heat stroke) (sunstroke)
 * overland flow
 * overpopulation
 * overpopulation (animals)

Ox

 * Oxfam
 * (oxidant: see) redox
 * (oxidation: see) redox
 * (oxidation-reduction reaction: see) redox
 * oxide
 * oxy-fuel welding and cutting
 * oxyacetylene
 * oxygen (see under Applications and under Precautions)
 * oxygen burning process
 * oxygen cycle
 * oxygen depletion in the environment
 * oxygen first aid
 * oxygen minimum zone
 * oxygen saturation
 * oxygen sensor
 * oxygen toxicity (oxygen toxicity syndrome) (oxygen poisoning)

Oy-Oz

 * ozone
 * ozone-oxygen cycle
 * ozone depletion
 * ozone depletion potential (ODP)
 * ozone layer (ozonosphere)