Закончите предложения словами. scientific, soil, lived, environment, progress, serious, political, ozone, harmony, hundreds

Some of years ago people in with nature. We live in the age of the and technological progress. This gave birth to the problem of . There are very problems. They are pollution of water, air,, the greenhouse effect, the destroying of the layer, the global warming. People have to protect the nature. The protection of natural resources and wildlife is becoming a programme in every country.