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published in water

Availability of water resources

The availability of water resources of the planet: the large blue sphere represents all the Earth’s water, the second blue sphere represents the world’s liquid fresh water (groundwater, rivers, lakes, and swamps). Credits: Howard Perlman, USGS; globe illustration by Jack Cook, Woods Hole Oceanographic Institution (©); Adam Nieman.

With the sponsorship of the Italian Ministry of Education, Universities and Research
 
Eni S.p.A. - P.IVA 00905811006