Pollution may threaten an operation of (sewage treatment plants).Logical formLearned from4 sentences. Pollution may propell environmental issues.Logical formLearned from4 sentences. (Air pollution) may consist of smoke.Logical formLearned from4 sentences. Cities can be with pollution.Logical formLearned from4 sentences. Pollution may enter a (food chain).Logical formLearned from4 sentences. (Pollution standards) can be (minimum requirement).Logical formLearned from4 sentences. (Animal waste pollution) may cross boundaries.Logical formLearned from4 sentences. A plan may require (pollution permits).Logical formLearned from4 sentences. A manner can be as (water pollution).Logical formLearned from4 sentences. Pollution may be dumped into a sea.Logical formLearned from4 sentences. Facts can be about pollution.Logical formLearned from4 sentences. A person can be a form of pollution.Logical formLearned from4 sentences. Companies may emit industrial pollution.Logical formLearned from4 sentences. A (state program) may reduce (pollution emissions).Logical formLearned from4 sentences. (Air pollution data) can be for counties.Logical formLearned from4 sentences.