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A survey that creates, marks, defines, retraces, or re-establishes the boundaries and subdivisions of the public land of the United States.
- Browse Related Terms: Aliquot (parts), Cadastral survey system, Corridor, Disturbance (land), Flats, footprint, Highly discordant land use, license, Millsite mining claim, Public Land Survey System (PLSS), Transmission corridor, Tribal land, Wilderness
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A chemical element used in making certain types of solar cells and batteries.
- Browse Related Terms: AC, Alternating current (AC), Battery, Build-out capacity, Cadmium (Cd), DC, Direct current (DC), DNI, Electrolytes (battery), Gallium (Ga), Inverter, Irradiance, Photovoltaic (PV) cell, Power conditioning system (PCS)
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A polycrystalline thin-film photovoltaic material.
- Browse Related Terms: Arrays, Boron, Cadmium telluride (CdTe), Cell (solar), Concentrating PV (CPV), concentrator, module, Multijunction solar cell, Photovoltaic (PV) array, Photovoltaic (PV) facility, Photovoltaic (PV) power plant, Photovoltaic (PV) system, Semiconductor, Silicon, Solar array, Solar Cell, Solar module, Solar panel, Thin-Film
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Of, containing, or like calcite (calcium carbonate).
- Browse Related Terms: Alkali, Aquifer-carbonate rock, Calcareous, Caliche, Carbonate rock, Carbonate-rock aquifer, CO, CO2, dolomite, Gypsum badlands, Hardpan, Limestone, loess, Petrocalcic, Travertine
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A large, usually circular depression at the summit of a volcano, formed when magma is erupted from a shallow underground magma reservoir. The removal of large volumes of magma may result in loss of structural support for the overlying rock, thereby leading to collapse of the ground and formation of a large depression (called a collapsed caldera). Calderas are different from craters, which are smaller circular depressions created primarily by explosive excavation of rock during eruptions.
- Browse Related Terms: Active volcano, Caldera, Cinder cone, Crater, Eruption, Lava tubes, Maar, Magma, Pyroclastic flow, Pyroclastic surge, Silicic volcanism, tephra, Unrest (episode), Volcanic Ash, Volcanic cone, Volcano
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A sedimentary deposit, commonly made of calcium carbonate, and formed from the leaching of minerals from the top layers of soil. Caliche deposits characterize arid and semi-arid environments.
- Browse Related Terms: Alkali, Aquifer-carbonate rock, Calcareous, Caliche, Carbonate rock, Carbonate-rock aquifer, CO, CO2, dolomite, Gypsum badlands, Hardpan, Limestone, loess, Petrocalcic, Travertine
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A legal limit that specifies the maximum level and time of exposure in the outdoor air for a given air pollutant and which is protective of human health and public welfare (Health and Safety Code section 39606b). CAAQSs are recommended by the California Office of Environmental Hazard Assessment and adopted into regulation by the California Air Resources Board. CAAQSs are the standards which must be met per the requirements of the California Clean Air Act (CCAA).
- Browse Related Terms: Air quality, Air Quality Standards, Ambient Air Quality Standards, California Ambient Air Quality Standard (CAAQS), Embryotoxicity, Hazardous air pollutant (HAP), Maximum contaminant level (MCL), National Ambient Air Quality Standards (NAAQS), National Pollutant Discharge Elimination System (NPDES), Occupational Safety and Health Administration (OSHA), OSHA, receptor
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A group of diseases characterized by uncontrolled cellular growth. Increased incidence of cancer can be caused by exposure to radiation and some chemicals.
- Browse Related Terms: Cancer, Change-out, Evaporation ponds, Personal protective equipment (PPE), Retinal damage, Rinsate, Risk, staging area, Steam amendment chemicals
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Plants and animals for which the U.S Fish and Wildlife Service has sufficient information on their biological status and threats to propose them as endangered or threatened under the Endangered Species Act, but for which development of a listing regulation is precluded by other higher priority listing activities.
- Browse Related Terms: Candidate Species, Endangered species, ESA, Rare species, Sensitive species, Special status species (threatened, endangered, sensitive, rare), Threatened species
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- See Central Arizona Project (CAP) Aqueduct
- Browse Related Terms: All-American Canal, CAP, Central Arizona Project (CAP) Aqueduct, Grazing lease, Locatable Minerals, Mineral Leasing Act of 1920 (MLA), Off-highway vehicle (OHV) or off-road vehicle, Permittee, Right-of-way (ROW)
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An empirical dimensionless number that represents the ratio of the amount of power produced by a generating facility over a given period of time, to the amount of power that would have been produced over that time period had the facility operated at its rated capacity.
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A colorless, odorless, nonpoisonous gas that is a normal part of the Earth's atmosphere. Carbon dioxide is a product of fossil fuel combustion as well as other processes. It is the most prominent greenhouse gas that traps heat radiated into the atmosphere.
- Browse Related Terms: Atmosphere, Carbon Dioxide (CO2), Carbon sink, GHGs, Global Warming, Greenhouse gase (GHG), Net emissions, Perfluorocarbon (PFC), Sink, Soil horizon mixing
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A colorless, odorless gas that is toxic if breathed in high concentrations over an extended period of time. Carbon monoxide is listed as a criteria air pollutant under Title I of the Clean Air Act.
- Browse Related Terms: Carbon Monoxide (CO), Particulate matter, PM10, PM2.5, SO2, Sulfur dioxide (SO2), Sulfur oxides (SOx)
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A reservoir that absorbs or takes up released carbon from another part of the carbon cycle. The four sinks, which are regions of the Earth within which carbon behaves in a systematic manner, are the atmosphere, terrestrial biosphere (usually including freshwater systems), oceans, and sediments (including fossil fuels).
- Browse Related Terms: Atmosphere, Carbon Dioxide (CO2), Carbon sink, GHGs, Global Warming, Greenhouse gase (GHG), Net emissions, Perfluorocarbon (PFC), Sink, Soil horizon mixing
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- Rocks (such as limestone or dolostone) that are composed primarily of minerals (such as calcite and dolomite) containing the carbonate ion (CO32-).
- Browse Related Terms: Alkali, Aquifer-carbonate rock, Calcareous, Caliche, Carbonate rock, Carbonate-rock aquifer, CO, CO2, dolomite, Gypsum badlands, Hardpan, Limestone, loess, Petrocalcic, Travertine
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- See Aquifer-carbonate rock
- Browse Related Terms: Alkali, Aquifer-carbonate rock, Calcareous, Caliche, Carbonate rock, Carbonate-rock aquifer, CO, CO2, dolomite, Gypsum badlands, Hardpan, Limestone, loess, Petrocalcic, Travertine
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The maximum density of wildlife that a particular area or habitat can sustain without deterioration of the habitat.
- Browse Related Terms: Carrying Capacity, Compensation, Desert focal bird species, Ecological resources, Endangered Species Act of 1973 (ESA), fragmentation, Fragmentation of habitat, Habitat degradation, Obligate species, Riparian obligate species, Sand dune obligate species, Shrub-steppe, Shrubsteppe obligate, Snag, steppe, Wildlife corridor, Xeric (habitat)
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A topographic region in which all water drains to a common outlet; a watershed.
- Browse Related Terms: Basin, Catchment basin, dewatering, Dry lake, Great Basin, Playa, Playa lake, Riparian, River Basin, Siltation, Watershed
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A hole or hollow area, especially inside a tree. Many animals, such as woodpeckers and raccoons, live in them.
- Browse Related Terms: Appropriate Management Level (AML), Aquaculture, Aquatic biota, Aquatic ecosystem, Biogenic source (emissions), Biota, Browse, Bryozoan, Burrow, cavity, Collection, Community, Crustaceans, Ecoregion, Fauna, Habitat, Harassment, Invertebrate, Montane, NatureServe Explorer, Plankton (planktonic), Terrestrial, Wetlands, Zoomorphic
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