Some petagrams can be constituted-of-or-filled-with carbon.Logical formLearned from10 sentences. An atmospheric (carbon dioxide) can be global.Logical formLearned from10 sentences. Natural gas may emit (carbon dioxide).Logical formLearned from10 sentences. Carbon may pertain-to a nation.Logical formLearned from10 sentences. (Carbon dioxide emissions) can be from combustion.Logical formLearned from10 sentences. (Carbon atoms) may be linked.Logical formLearned from10 sentences. Estimates can be constituted-of-or-filled-with carbon.Logical formLearned from10 sentences. A (carbon production) can be organic.Logical formLearned from10 sentences. Carbon may undergo losses.Logical formLearned from10 sentences. (Carbon dioxide) may be absorbed by oceans.Logical formLearned from10 sentences. A decrease can be in (carbon dioxide emissions).Logical formLearned from10 sentences. Underground storage can be constituted-of-or-filled-with (carbon dioxide).Logical formLearned from10 sentences. An instrument can be for controling (carbon emissions).Logical formLearned from10 sentences. (Carbon dioxide) can be as a pollutant.Logical formLearned from10 sentences. A satellite may be dedicated to monitorring (carbon dioxide).Logical formLearned from10 sentences.