Carbon DioxideCarbonIsotopesIsotope LabelingCarbon IsotopesOxygen IsotopesNitrogen IsotopesNitrogen DioxideCarbon MonoxidePartial PressureSulfur DioxideCapnographyInsufflationAtmosphereNanotubes, CarbonOxygenRespirationHypercapniaPulmonary Gas ExchangeBlood Gas Monitoring, TranscutaneousChromatography, Supercritical FluidBlood Gas AnalysisZinc IsotopesLasers, GasCarbon SequestrationPneumoperitoneum, ArtificialTidal VolumeSulfur IsotopesCarbon Monoxide PoisoningDeuteriumDry IceIron IsotopesAcidosis, RespiratoryHydrogen-Ion ConcentrationMethaneBicarbonatesOxygen ConsumptionCarbon FootprintGasesNitrogenThorium DioxideHydrogenPhotosynthesisAirRespiratory Dead SpaceBiomassEcological Systems, ClosedCarbonic AnhydrasesCarbonatesStrontium IsotopesCarbon TetrachlorideCarbon RadioisotopesAcetatesGreenhouse EffectTemperatureHypocapniaWaterOxidation-ReductionHyperventilationKineticsEmbolism, AirSoilHypoventilationRadioisotope Dilution TechniqueOxidesCarbon CyclePulmonary VentilationMass SpectrometryAir PollutantsCarbon DisulfideAnesthesia, InhalationCerebrovascular CirculationTitaniumAutotrophic ProcessesEcosystemSeawaterNitrous OxideChemoreceptor CellsRespiratory InsufficiencyTime FactorsAnaerobiosisRespiration, ArtificialRespiratory MechanicsOceans and SeasAcid-Base EquilibriumArgonBiodegradation, EnvironmentalTreesSilicon DioxidePneumoperitoneumHeliumCulture MediaMarsFormatesExtraterrestrial EnvironmentAnesthetics, InhalationCarbonic AcidVolcanic EruptionsGas Chromatography-Mass SpectrometryGeological Phenomena