Housing may undergo concentration.Logical formLearned from24 sentences. A metal may undergo concentrations.Logical formLearned from24 sentences. (Carbon dioxide concentrations) can be elevated.Logical formLearned from24 sentences. (Hydrogen peroxide) may undergo concentrations.Logical formLearned from24 sentences. Agents may undergo concentrations.Logical formLearned from24 sentences. A momentary lapse can be in concentration.Logical formLearned from24 sentences. Efforts may undergo concentration.Logical formLearned from24 sentences. Aromatic hydrocarbons may undergo concentrations.Logical formLearned from24 sentences. Amino acids may undergo concentration.Logical formLearned from24 sentences. A form can be constituted-of-or-filled-with concentration.Logical formLearned from24 sentences. Concentrations can be geographical.Logical formLearned from24 sentences. Concentration can be dissolved.Logical formLearned from24 sentences. Metabolites may undergo concentration.Logical formLearned from24 sentences. Persons may lack concentration.Logical formLearned from24 sentences. Personnel may undergo concentration.Logical formLearned from24 sentences.