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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301by Ausilio, Giorgia, Sand, Håkan, Månsson, Johan, Mathisen, Karen Marie, Wikenros, CamillaGet access
Published in Frontiers in Ecology and Evolution (2021)
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302by Zimmermann, Barbara, Sand, Håkan, Wabakken, Petter, Liberg, Olof, Andreassen, Harry PeterGet access
Published in Journal of Animal Ecology (2014)
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303Mobility of moose—comparing the effects of wolf predation risk, reproductive status, and seasonalityby Wikenros, Camilla, Balogh, Gyöngyvér, Sand, Håkan, Nicholson, Kerry L., Månsson, JohanGet access
Published in Ecology and Evolution (2016)
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304
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305by Nielsen, Troels F.D., Jensen, Svend M., Secher, Karsten, Sand, Karina K.Get access
Published in Lithos (2009)
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306by Steenfelt, Agnete, Jensen, Sven M., Nielsen, Troels F.D., Sand, Karina K.Get access
Published in Lithos (2009)
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307by Weberg Teigen, Sverre, Skaare, Janneche Utne, Bjørge, Arne, Degre, Eva, Sand, GunhildGet access
Published 1993
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309by Liston, Glen E., Bruland, Oddbjørn, Winther, Jan-Gunnar, Elvehøy, Hallgeir, Sand, KnutGet access
Published in Polar Research (1999)
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312by Rodriguez-Recio, Mariano, Rodriguez Recio, Mariano, Wikenros, Camilla, Zimmermann, Barbara, Sand, HåkanGet access
Published 2022
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313by Ausilio, G., Wikenros, Camilla, Sand, Håkan, Wabakken, P., Eriksen, A., Zimmermann, B.Get access
Published 2022
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314by G. Ausilio, C. Wikenros, H. Sand, P. Wabakken, A. Eriksen, B. ZimmermannGet access
Published in Ecosphere (2022)
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317by Steenfelt, Agnete, Jensen, Sven Monrad, Nielsen, Troels F. D., Sand, Karina KrarupGet access
Published 2008
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318by Åkesson, Mikael, Liberg, Olof, Sand, Håkan, Wabakken, Petter, Bensch, Staffan, Flagstad, ØysteinGet access
Published in Molecular Ecology (2016)
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319
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