hydrosphere, subglacial, osmotic pressure, advection, geosphere, biosphere, nitrification, geomorphic, deglaciation, biogeochemical, albedo, evapotranspiration, anthropogenic, benthos, endothermic, recrystallization, tropopause, photosynthesis, nitrogen fixation, rhizosphere, solvation, ecosystems, chemosynthesis, plate tectonics, gyres, diurnal variation, oligotrophic, enthalpy, lithosphere, equilibration, geomorphology, hydrograph, sorption, poleward, hydric, atmospheric, heterotrophic, salinity, isotherms, airglow, volcanism, icecaps, acidification, abiotic, hydrology, temperature gradient, diffusive, thermosphere, planktonic, glaciation, autotrophic, landforms, radiational, solutes, moulins, phanerozoic, quaternary period, noachian, ecology, paleoecology, sedimentation, hydroxyl radical, stoichiometry, glaciers, asthenosphere, supersaturation, oceans, biogenic, inflowing, fluxes, soils, el nino southern oscillation, evaporation, interfacial tension, morphogenetic, biota, hydrophobicity, meltwater, magmas, wettability, periodicities, photochemistry, water vapor, metastable, carbonic acid, fossilization, subpolar, magnetic dipole, phytoplankton, spectroscopic analysis, earths, photochemical reaction, salination, crustal, troposphere, phreatic, volatilization, abiogenesis, peristalsis, faunas, biotic, photoperiod