(Air pollution) can be significant.Logical formLearned from6 sentences. Issues can be constituted-of-or-filled-with (air pollution).Logical formLearned from6 sentences. Pollution can be dire.Logical formLearned from6 sentences. Environmental pollution may undergo a management.Logical formLearned from6 sentences. A main source may pertain-to pollution.Logical formLearned from6 sentences. An (air pollution alert) can be in effect.Logical formLearned from6 sentences. Pollution can be based.Logical formLearned from6 sentences. (Pollution levels) may be reduced.Logical formLearned from6 sentences. A maryland-department of pollution may consider new.Logical formLearned from6 sentences. A process may produce pollution.Logical formLearned from6 sentences. (Air pollution levels) can be urban.Logical formLearned from6 sentences. A (pollution management) can be improved.Logical formLearned from6 sentences. A crisis of pollution may demand study.Logical formLearned from6 sentences. A (greenhouse gas pollution) may pertain-to a country.Logical formLearned from6 sentences. A warning label may advise of dangers of (plastic pollution).Logical formLearned from6 sentences.