Indicators of pollution can be absent.Logical formLearned from4 sentences. Parties can be responsible for pollution.Logical formLearned from4 sentences. States can be with (pollution problems).Logical formLearned from4 sentences. (Pollution controls) can be innovative.Logical formLearned from4 sentences. Pollution can be in operations.Logical formLearned from4 sentences. A person may claim a (depreciation allowance) on a (pollution control facility).Logical formLearned from4 sentences. Facilities can be with (pollution prevention).Logical formLearned from4 sentences. An (air pollution control) can be wet.Logical formLearned from4 sentences. (Waste minimization) may be emphasised as a major element of (pollution control).Logical formLearned from4 sentences. A major element can be constituted-of-or-filled-with (pollution control).Logical formLearned from4 sentences. A bypass may pertain-to a (pollution control equipment).Logical formLearned from4 sentences. Protection can be against pollution.Logical formLearned from4 sentences. Pollution may undergo a sedimentation.Logical formLearned from4 sentences. Levels can be constituted-of-or-filled-with (nitrate pollution).Logical formLearned from4 sentences. Research can be on (health effects) of (air pollution).Logical formLearned from4 sentences.