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BIOGEOCHEMICAL PROCESSES (11)
chemical decomposition, hydrolysis, nitrification... 		GEOCHEMICAL PROPERTIES (8)
chemical concentrations, isotope measurements, isotope ratios, isotopes, isotopic age...
GEOCHEMICAL PROCESSES (10)
biodegration, carbonate formation, chemical fixation, chemical weathering, decomposition... 		MARINE GEOCHEMICAL PROCESSES (5)
chemical decomposition, dissolution, mineral dissolution...


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