A (carbon footprint) can be annual.Logical formLearned from10 sentences. An increase can be in (carbon dioxide concentrations).Logical formLearned from10 sentences. A (carbon film) can be amorphous.Logical formLearned from10 sentences. (Carbon sequestration) can be in terrestrial ecosystems.Logical formLearned from10 sentences. Components may pertain-to a (carbon cycle).Logical formLearned from10 sentences. Ratios can be constituted-of-or-filled-with (carbon isotopes).Logical formLearned from10 sentences. (Carbon sequestration) can be an option.Logical formLearned from10 sentences. Carbon may be produced.Logical formLearned from10 sentences. A sink can be for atmospheric (carbon dioxide).Logical formLearned from10 sentences. Carbon may undergo a measurement.Logical formLearned from10 sentences. Organic carbon may undergo a production.Logical formLearned from10 sentences. Response can be to (carbon dioxide).Logical formLearned from10 sentences. Models may show a (carbon cycle).Logical formLearned from10 sentences. Estimates can be constituted-of-or-filled-with (carbon sequestration).Logical formLearned from10 sentences. Sinks can be for carbon.Logical formLearned from10 sentences.