(Carbon concentrations) can be in the atmosphere.Logical formLearned from11 sentences. Pharmaceutical companies may undergo concentration.Logical formLearned from11 sentences. Persons may endure in (concentration camps).Logical formLearned from11 sentences. Brown bears may undergo concentrations.Logical formLearned from11 sentences. A problem can be concentration.Logical formLearned from11 sentences. Concentrations can be in a country.Logical formLearned from11 sentences. Polyphenols may undergo concentration.Logical formLearned from11 sentences. Agriculture may undergo concentration.Logical formLearned from11 sentences. A survivor may pertain-to a nazi (concentration camp).Logical formLearned from11 sentences. (Oxygen concentrations) can be low.Logical formLearned from11 sentences. (Energy companies) may undergo concentration.Logical formLearned from11 sentences. Teachers may create an area of concentration.Logical formLearned from11 sentences. A person may be sent to a (concentration camp).Logical formLearned from11 sentences. Banking may undergo concentration.Logical formLearned from11 sentences. Samples may be contaminated with concentration of dioxin.Logical formLearned from11 sentences.