A decline can be in pollution.Logical formLearned from3 sentences. Violators can be constituted-of-or-filled-with (pollution laws).Logical formLearned from3 sentences. Legislation may be aimed at decreasing pollution.Logical formLearned from3 sentences. Pollution can be dense.Logical formLearned from3 sentences. Runoff can be a source of pollution.Logical formLearned from3 sentences. Pollution may undergo concentration.Logical formLearned from3 sentences. Biological indicators can be constituted-of-or-filled-with (ocean pollution).Logical formLearned from3 sentences. Indicators can be constituted-of-or-filled-with environmental pollution.Logical formLearned from3 sentences. Use of a product may result in (air pollution).Logical formLearned from3 sentences. Haze can be from pollution.Logical formLearned from3 sentences. Particles can be in pollution.Logical formLearned from3 sentences. A capacity of (air pollution) can be a key.Logical formLearned from3 sentences. Problems may result from pollution.Logical formLearned from3 sentences. Incentives may reduce (air pollution).Logical formLearned from3 sentences. Gases may be captured by some (pollution control equipment).Logical formLearned from3 sentences.