Forces may undergo concentration.Logical formLearned from228 sentences. Ozone may undergo concentrations.Logical formLearned from224 sentences. A lapse can be in concentration.Logical formLearned from224 sentences. A look can be constituted-of-or-filled-with concentration.Logical formLearned from221 sentences. Pollutants may undergo concentrations.Logical formLearned from219 sentences. Power may undergo concentrations.Logical formLearned from210 sentences. Economic power may undergo concentration.Logical formLearned from209 sentences. Poverty may undergo concentrations.Logical formLearned from206 sentences. Nutrients may undergo concentrations.Logical formLearned from206 sentences. Arsenic may undergo concentrations.Logical formLearned from203 sentences. Particles may undergo concentration.Logical formLearned from201 sentences. Poverty may undergo concentration.Logical formLearned from200 sentences. Concentration can be geographic.Logical formLearned from198 sentences. A level can be constituted-of-or-filled-with concentration.Logical formLearned from197 sentences. A substance may undergo concentration.Logical formLearned from197 sentences.