Water
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Water is an inorganic compound with the chemical formula . It is a transparent, tasteless, odorless, and nearly colorless chemical substance. It is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a solvent). It is vital for all known forms of life, despite not providing food energy or organic micronutrients. Its chemical formula, , indicates that each of its molecules contains one oxygen and two hydrogen atoms, connected by covalent bonds. The hydrogen atoms are attached to the oxygen atom at an angle of 104.45°. In liquid form, is also called "water" at standard temperature and pressure.
Because Earth's environment is relatively close to water's triple point, water exists on Earth as a solid, a liquid, and a gas. It forms precipitation in the form of rain and aerosols in the form of fog. Clouds consist of suspended droplets of water and ice, its solid state. When finely divided, crystalline ice may precipitate in the form of snow. The gaseous state of water is steam or water vapor.
Water covers about 71% of the Earth's surface, with seas and oceans making up most of the water volume (about 96.5%). Small portions of water occur as groundwater (1.7%), in the glaciers and the ice caps of Antarctica and Greenland (1.7%), and in the air as vapor, clouds (consisting of ice and liquid water suspended in air), and precipitation (0.001%). Water moves continually through the water cycle of evaporation, transpiration (evapotranspiration), condensation, precipitation, and runoff, usually reaching the sea.
Water plays an important role in the world economy. Approximately 70% of the fresh water used by humans goes to agriculture. Fishing in salt and fresh water bodies has been, and continues to be, a major source of food for many parts of the world, providing 6.5% of global protein. Much of the long-distance trade of commodities (such as oil, natural gas, and manufactured products) is transported by boats through seas, rivers, lakes, and canals. Large quantities of water, ice, and steam are used for cooling and heating in industry and homes. Water is an excellent solvent for a wide variety of substances, both mineral and organic; as such, it is widely used in industrial processes and in cooking and washing. Water, ice, and snow are also central to many sports and other forms of entertainment, such as swimming, pleasure boating, boat racing, surfing, sport fishing, diving, ice skating, snowboarding, and skiing.
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581by Décima, Moira, Stukel, Michael R, Nodder, Scott D, Gutiérrez-Rodríguez, Andrés, Selph, Karen E, Dos Santos, Adriana Lopes, Safi, Karl, Kelly, Thomas B, Deans, Fenella, Morales, Sergio E, Baltar, Federico, Latasa, Mikel, Gorbunov, Maxim Y, Pinkerton, MattContributors: “...National Institution for Water and Atmospheric (New Zealand)...”
Published in Nature Communications (2023)
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582by Acuna, Vicenç, Jorda‐Capdevila, Dídac, Vezza, Paolo, De Girolamo, Anna Maria, McClain, Michael, Stubbington, Rachel, Pastor, Amandine Valérie, Lamouroux, N., Schiller, Daniel, Munné, Antoni, Datry, ThibaultContributors: “...Water Research Institute...”
Published in Journal of Applied Ecology (2020)
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583by Acuna, Vicenç, Jorda‐capdevila, Dídac, Vezza, Paolo, de Girolamo, Anna Maria, Mcclain, Michael, Stubbington, Rachel, Pastor, Amandine, Lamouroux, Nicolas, Schiller, Daniel, Munné, Antoni, Datry, T.Contributors: “...Water Research Institute...”
Published in Journal of Applied Ecology (2020)
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585by Heino, Matias, Puma, Michael J., Ward, Philip J., Gerten, Dieter, Heck, Vera, Siebert, Stefan, Kummu, MattiContributors: “...Water and Environmental Eng....”
Published in Nature Communications (2018)
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586
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587by Chertoprud, Mikhail V., Palatov, Dmitry M., Dimante-Deimantovica, IntaContributors: “...Effect of climate change and related stressors on fresh and brackish water ecosystems in Svalbard...”
Published in Journal of Natural History (2017)
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588by Dupont, Daniel L. J.Contributors: “... (Manitoba Conservation and Water Stewardship)...”
Published 2014
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589by King, J. Y., Reeburgh, W. S., Thieler, K. K., Kling, G. W., Loya, W. M., Johnson, L. C., Nadelhoffer, K. J.Contributors: “...Now at Department of Soil, Water, and Climate, University of Minnesota, St. Paul, Minnesota, USA....”
Published in Global Biogeochemical Cycles (2002)
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590by N. Kalinkina M., E. Tekanova V., A. Sabylina V., A. Ryzhakov V., Н. Калинкина М., Е. Теканова В., А. Сабылина В., А. Рыжаков В.Contributors: “...Scientific Research Plan of the Northern Water Problems Institute of the Karelian Research Centre...”
Published in Anuario Colombiano de Historia Social y de la Cultura (2019)
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591by Garland, Ellen C., Goldizen, Anne W., Lilley, Matthew S., Rekdahl, Melinda L., Garrigue, Claire, Constantine, Rochelle, Hauser, Nan Daeschler, Poole, M. Michael, Robbins, Jooke, Noad, Michael J.Contributors: “...Department of Sustainability, Environment, Water, Population and Communities, Australian Government...”
Published in Conservation Biology (2015)
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592
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593
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595by Hu, Rong, Bostock, Helen C., Greaves, Mervyn, Piotrowski, Alexander M., McCave, I. NicholasContributors: “...National Institute of Water and Atmospheric Research...”
Published in Earth and Planetary Science Letters (2020)
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596by Halket, IanContributors: “...Cicek, Nazim (Biosystems Engineering) Lobb, David (Soil Science) Steffler, Peter (Water Resources...”
Published 2010
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597by Halket, IanContributors: “...Cicek, Nazim (Biosystems Engineering) Lobb, David (Soil Science) Steffler, Peter (Water Resources...”
Published 2010
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598by Verland, Ninna, Kaarsholm, Henrik M., Nørregaard, Rasmus D., Bach, Lis, Dietz, Rune, Leifsson, Pall S., Dang, Mai, Nowak, Barbara, Sonne, ChristianContributors: “...The North Water Project...”
Published in Toxicological & Environmental Chemistry (2018)
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599by Beckman, Robert C., Henriksen, Tore, Dalaker Kraabel, Kristine, Molenaar, E.J., Roach, J. AshleyContributors: “...Parel Water en duurzaamheid / UCWOSL...”
Published 2017
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600by Irvine-Fynn, Tristram D. L., Hanna, E., Barrand, N.E., Porter, Philip, Kohler, J., Hodson, A.J.Contributors: “...Water and Environment...”
Published in Hydrological Processes (2014)
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