Science ancient times nature has served man. For thousands of years people lived in harmony with the …, polite, environment, however, with the…. our negative influence began to increase., industrial revolution, measures, Nowadays, large cities and factories …. the air and water., disappearing, pollute, big cities suffer from …., which is dangerous for health., smog, ozone layer, as a result of human activity, many species of animals and plants are…, industrial revolution, disappearing

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