Sand
![Sand [[dune](https://upload.wikimedia.org/wikipedia/commons/8/8b/Libya_4608_Idehan_Ubari_Dunes_Luca_Galuzzi_2007.jpg)
The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non-tropical coastal settings is silica (silicon dioxide, or SiO2), usually in the form of quartz.
Calcium carbonate is the second most common type of sand, for example, aragonite, which has mostly been created, over the past 500million years, by various forms of life, like coral and shellfish. For example, it is the primary form of sand apparent in areas where reefs have dominated the ecosystem for millions of years, as in the Caribbean. Somewhat more rarely, sand may be composed of calcium sulfate, such as gypsum and selenite, as is found in places such as White Sands National Park and Salt Plains National Wildlife Refuge in the U.S.
Sand is a non-renewable resource over human timescales, and sand suitable for making concrete is in high demand. Desert sand, although plentiful, is not suitable for concrete. Fifty billion tons of beach sand and fossil sand are used each year for construction. Provided by Wikipedia
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381by Nordli, Kristoffer, Wabakken, Petter, Eriksen, Ane, Sand, Håkan, Wikenros, Camilla, Maartmann, Erling, Zimmermann, BarbaraGet access
Published in Animal Behaviour (2023)
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382by Liberg, Olof, Chapron, Guillaume, Wabakken, Petter, Pedersen, Hans Christian, Hobbs, N. Thompson, Sand, HåkanGet access
Published in Proceedings of the Royal Society B: Biological Sciences (2012)
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383by Liberg, Olof, Suutarinen, Johanna, Åkesson, Mikael, Andrén, Henrik, Wabakken, Petter, Wikenros, Camilla, Sand, HåkanGet access
Published in Biological Conservation (2020)
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384by Åkesson, Mikael, Flagstad, Øystein, Aspi, Jouni, Kojola, Ilpo, Liberg, Olof, Wabakken, Petter, Sand, HåkanGet access
Published in Conservation Genetics (2021)
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385by Gervasi, Vincenzo, Sand, Håkan, Zimmermann, Barbara, Mattisson, Jenny, Wabakken, Petter, Linnell, John D.C.Get access
Published in Ecological Applications (2013)
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386by Wikenros, Camilla, Sand, Håkan, Månsson, Johan, Maartmann, Erling, Eriksen, Ane, Wabakken, Petter, Zimmermann, BarbaraGet access
Published in Scientific Reports (2020)
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388by Allen, Andrew M., Månsson, Johan, Sand, Håkan, Malmsten, Jonas, Ericsson, Göran, Singh, Navinder J.Get access
Published in Ecosphere (2016)
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389by Liston, Glen E., Winther, Jan-Gunnar, Bruland, Oddbjørn, Elvehøy, Hallgeir, Sand, Knut, Karlöf, LarsGet access
Published in Antarctic Science (2000)
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390by Gervasi, Vincenzo, Sand, Håkan, Zimmermann, Barbara, Mattisson, Jenny, Wabakken, Petter, Linnell, John D. C.Get access
Published in Ecological Applications (2013)
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391by Liberg, Olof, Chapron, Guillaume, Wabakken, Petter, Pedersen, Hans Christian, Hobbs, N. Thompson, Sand, HåkanGet access
Published in Proceedings of the Royal Society B: Biological Sciences (2011)
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395by Sejr, M.K., Sand, M.K., Jensen, K.T., Petersen, J.K., Christensen, Peter Bondo, Rysgaard, S.Get access
Published 2002
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396by Mahmood, Rashed, von Salzen, Knut, Flanner, Mark, Sand, Maria, Langner, Joakim, Wang, Hailong, Huang, LinGet access
Published in Journal of Geophysical Research: Atmospheres (2016)
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397by Sand, M., Berntsen, T. K., von Salzen, K., Flanner, M. G., Langner, J., Victor, D. G.Get access
Published in Nature Climate Change (2015)
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398by Jonzén, Niclas, Sand, Hakan, Wabakken, Petter, Swenson, Jon E., Kindberg, Jonas, Liberg, Olof, Chapron, GuillaumeGet access
Published in Ecological Modelling (2013)
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399by Sejr, M. K., Sand, M. K., Jensen, K. T., Petersen, J. K., Christensen, P. B., Rysgaard, S.Get access
Published 2002
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400by A. Lewinschal, A. M. L. Ekman, H.-C. Hansson, M. Sand, T. K. Berntsen, J. LangnerGet access
Published in Atmospheric Chemistry and Physics (2019)
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