An (ozone layer) may undergo a depletion.Logical formLearned from640 sentences. Natural resources may undergo a depletion.Logical formLearned from414 sentences. Resources may undergo a depletion.Logical formLearned from324 sentences. Ozone may undergo a depletion.Logical formLearned from166 sentences. (Fish stocks) may undergo a depletion.Logical formLearned from116 sentences. Resources may undergo a depletion.Logical formLearned from96 sentences. Stocks may undergo a depletion.Logical formLearned from83 sentences. Reserve may undergo a depletion.Logical formLearned from82 sentences. Oxygen may undergo a depletion.Logical formLearned from79 sentences. Forests may undergo a depletion.Logical formLearned from78 sentences. Natural resources may undergo a depletion.Logical formLearned from72 sentences. A depletion can be serious.Logical formLearned from69 sentences. Cells may undergo a depletion.Logical formLearned from61 sentences. Fossil fuels may undergo a depletion.Logical formLearned from54 sentences. A depletion can be gradual.Logical formLearned from52 sentences.