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1 Mathematics, must, every, is, well, institutes, studied, technological, at all, because, engineer, know, it.
2. Subject, it, article, is, the, interesting, most, on, this.
3. Problems, it, can, has, global, become, evident, that, solved, ecological, be, only, on, the, level.
4 The, to, use, of, the, new, possible, number, exuipment, made, it, minimize, the, of, workers 5. It, that is, situation, industrialization, serious, is, making, ecological, very .