(Carbon dioxide) can be from human activities.Logical formLearned from15 sentences. Organic carbon may undergo an accumulation.Logical formLearned from15 sentences. (Carbon limits) can be mandatory.Logical formLearned from15 sentences. A (carbon storage) can be long-term.Logical formLearned from15 sentences. (Carbon monoxide) can be in air.Logical formLearned from15 sentences. (Carbon monoxide) may undergo an inhalation.Logical formLearned from15 sentences. (Carbon dioxide) may be pumped into the atmosphere.Logical formLearned from15 sentences. Ratios can be constituted-of-or-filled-with carbon.Logical formLearned from15 sentences. Changes can be in carbon.Logical formLearned from15 sentences. A (carbon source) can be organic.Logical formLearned from15 sentences. (Carbon fluxes) can be organic.Logical formLearned from15 sentences. (Carbon dioxide) may be removed from the atmosphere.Logical formLearned from15 sentences. (Carbon dioxide) may undergo a rise.Logical formLearned from15 sentences. A (carbon tax) can be on fossil fuels.Logical formLearned from15 sentences. (Carbon emissions) may rise.Logical formLearned from15 sentences.