A (depletion cost) can be for reasons.Logical formLearned from1 sentences. Great whales may undergo a depletion.Logical formLearned from1 sentences. Depletion of great whales can be inevitable.Logical formLearned from1 sentences. (Oxygen depletion) can be in waters.Logical formLearned from1 sentences. Organic material may lead to (oxygen depletion).Logical formLearned from1 sentences. Depletion of natural resources may demand incentives.Logical formLearned from1 sentences. (Fishing communities) may be hurted by a depletion of stock.Logical formLearned from1 sentences. An (ozone depletion) can be over a continent.Logical formLearned from1 sentences. Researcher may discover an (ozone depletion).Logical formLearned from1 sentences. A depletion can be disastrous.Logical formLearned from1 sentences. (Petroleum production) may decline due to a depletion of reserve.Logical formLearned from1 sentences. A (seal herd) may undergo a depletion.Logical formLearned from1 sentences. A depletion of a (seal herd) may result in a signing of a treaty.Logical formLearned from1 sentences. Forests may be protected from depletion.Logical formLearned from1 sentences. Some percent can be constituted-of-or-filled-with (ozone depletion).Logical formLearned from1 sentences.