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Истощение стратосферного озонового щ слоя
progress state of environment climate change stratospheric ozone depletion acidification tropospheric ozone chemicals waste biodiversity inland waters marine and coastal environment soil degradation urban environment technological and natural hazards
Сегодня мы сделаем рускую букву Ш как в слове шарик, а затем мы модифицируем её в букву Щ как в слове щука
today we are going to make russian Ш as in word шарик and then we will modify it to make a letter Щ as in word шука