Carbon may undergo a sequestration.Logical formLearned from108 sentences. Carbon can be radioactive.Logical formLearned from108 sentences. (Carbon monoxide) may undergo concentrations.Logical formLearned from108 sentences. (Carbon dioxide emissions) may undergo a reduction.Logical formLearned from108 sentences. (Carbon dioxide) may be produced.Logical formLearned from108 sentences. (Carbon monoxide) can be gas.Logical formLearned from107 sentences. An organic carbon can be particulate.Logical formLearned from106 sentences. (Carbon dioxide) can be in air.Logical formLearned from102 sentences. A (carbon emitter) may pertain-to the world.Logical formLearned from100 sentences. Carbon may undergo a use.Logical formLearned from100 sentences. Carbon may undergo storage.Logical formLearned from99 sentences. Limits can be on (carbon emissions).Logical formLearned from99 sentences. Cuts can be in (carbon dioxide emissions).Logical formLearned from98 sentences. (Carbon dioxide levels) can be in the atmosphere.Logical formLearned from97 sentences. (Carbon footprints) may pertain-to persons.Logical formLearned from97 sentences.