Carbon IsotopesCarbonIsotopesCarbon DioxideIsotope LabelingOxygen IsotopesNitrogen IsotopesCarbon MonoxideNanotubes, CarbonMethyl ChlorideAtmosphereGeologic SedimentsFossilsMethaneChemical FractionationPhotosynthesisXanthobacterVolcanic EruptionsBiomassEthylene DichloridesBiodegradation, EnvironmentalPaleontologyPinus taedaPlant LeavesPeptococcaceaeCarbon Monoxide PoisoningCarbonatesNitrogenCarbon Compounds, InorganicCarbon CycleEcosystemPlant TranspirationEpitestosteroneFlaveriaRhamnusAcetatesSeawaterCulture MediaHistory, AncientHyphomicrobiumMyrtusSoilGas Chromatography-Mass SpectrometryCarbon TetrachlorideWaterDoping in SportsOceans and SeasGlucoseFresh WaterCarbon SequestrationPhosphoenolpyruvate CarboxylaseAnaerobiosisTreesZinc IsotopesCarbon DisulfidePlant StomataRainRibulose-Bisphosphate CarboxylaseSulfur IsotopesBacteriaPoaceaeExtinction, BiologicalCarbohydrate MetabolismMolecular Sequence DataDeuteriumPhylogenyTimeGlycerolClimateSulfatesCarbon RadioisotopesIron IsotopesChiropteraPlantsFermentationPseudomonasCarbon Tetrachloride PoisoningKineticsModels, BiologicalEscherichia coliOxidation-ReductionSaccharomyces cerevisiaeAlkanesGene Expression Regulation, BacterialGeographyBacterial ProteinsAerobiosisSuccinic AcidGene Expression Regulation, FungalHydrogen-Ion ConcentrationMutationXyloseSoil MicrobiologyRNA, Ribosomal, 16SStrontium IsotopesCarbon FootprintSuccinatesMass SpectrometrySeasonsDNA, Bacterial