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Incubator escapee wiki:Size comparisons
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===Biology=== * The [[World Resources Institute]] claims that approximately '''1.4 million''' [[species]] have been named, out of an unknown number of total species. A 2011 study says there are ''8,700,000'' species (6,500,000 land species, 2,200,000 marine species).<ref>[http://www.rtve.es/noticias/20110823/calculo-mas-preciso-historia-cifra-87-millones-especies-habitan-tierra/456588.shtml El cálculo más preciso de la historia cifra las especies que viven en la Tierra en 8,7 millones] {{in lang|es}}</ref>
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