(Carbon gases) can be a factor.Logical formLearned from15 sentences. A person may have some (carbon fiber hoods).Logical formLearned from15 sentences. (Carbon molecules) can be synthetic.Logical formLearned from15 sentences. (Carbon monoxide) can be colorless.Logical formLearned from15 sentences. A (carbon footprint) may pertain-to computers.Logical formLearned from15 sentences. Atmospheric (carbon dioxide) may undergo a rise.Logical formLearned from15 sentences. A (carbon tax) may pertain-to a country.Logical formLearned from15 sentences. (Carbon monoxide) may undergo a formation.Logical formLearned from15 sentences. Persons may reduce (carbon emissions).Logical formLearned from15 sentences. A (carbon dioxide) may contribute to global warming.Logical formLearned from15 sentences. Combinations can be constituted-of-or-filled-with carbon.Logical formLearned from15 sentences. A role can be in a cycling of carbon.Logical formLearned from15 sentences. An increase can be in carbon.Logical formLearned from15 sentences. Clouds can be constituted-of-or-filled-with (carbon dioxide).Logical formLearned from15 sentences. A (carbon content) may pertain-to water.Logical formLearned from15 sentences.