Subjects: *Carbon cycle; *Atmospheric carbon dioxide; *Water chemistry
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Subjects: *Geothermal resources; *Electric power consumption; Volcanic fieldsEl Salvador
Subjects: *Sediments; *Paleoclimatology; Volcanic fields
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Subjects: *Aerosols; *Carbon cycle; *Biogeochemical cycles
Subjects: *Groundwater; *Composition of water; *Earth sciencesItaly
Subjects: *Volcanic gases; *Particulate matter; *Metals & the environment
Subjects: Volcanic fields; Tethys (Paleogeography); Subduction zonesTibet (China); China
Subjects: Volcanic fields; Structural geology; MagmasChina