An ecosystem may undergo pollution.Logical formLearned from4 sentences. Pollution can be pathogenic.Logical formLearned from4 sentences. River may undergo pollution.Logical formLearned from4 sentences. (Oil refineries) can be sources of pollution.Logical formLearned from4 sentences. (Pollution controls) may undergo a use.Logical formLearned from4 sentences. Pollution can be in lakes.Logical formLearned from4 sentences. (Air pollution) may threaten health of human beings.Logical formLearned from4 sentences. Effects may pertain-to a (pollution control industry).Logical formLearned from4 sentences. A (pollution control industry) may be used in analyes.Logical formLearned from4 sentences. Pollution can be harmful.Logical formLearned from4 sentences. Sources can be constituted-of-or-filled-with (marine pollution).Logical formLearned from4 sentences. (Air pollution) may undergo a creation.Logical formLearned from4 sentences. A (pollution assessment) can be underground.Logical formLearned from4 sentences. Rules may govern (air pollution).Logical formLearned from4 sentences. Costs may be associated with pollution.Logical formLearned from4 sentences.