Pollution can be an externality.Logical formLearned from4 sentences. A majority of (fertilizer pollution) may come from an area of cropland.Logical formLearned from4 sentences. A bill may reduce pollution.Logical formLearned from4 sentences. Sites can be constituted-of-or-filled-with pollution.Logical formLearned from4 sentences. Pollution can be costly.Logical formLearned from4 sentences. (Air pollution) may have effects.Logical formLearned from4 sentences. A person may die from pollution.Logical formLearned from4 sentences. Pollution may pose a threat.Logical formLearned from4 sentences. A significant reduction can be in pollution.Logical formLearned from4 sentences. (Surface pollution) can be from septic tanks.Logical formLearned from4 sentences. Marine pollution may result from ship.Logical formLearned from4 sentences. Damages may be caused by pollution.Logical formLearned from4 sentences. Pollution can be from a (mining industry).Logical formLearned from4 sentences. Pollution may be generated in an area.Logical formLearned from4 sentences. A program may promote (pollution prevention).Logical formLearned from4 sentences.