II. Translate the sentences into Russian

1. There are signs of ecological imbalance, which may cause a crisis if due measures are not taken. 2. The air, the earth and its rivers and seas are becoming polluted with bу-products of man's activities. 3. The biosphere is affected by all sorts of human activities. 4. Many of the man-made substances do not belong to the natural cycle of matter. 5. They weaken the capacity of natural processes for self-regulation. 6. We need silence as much as we need fresh air and unpolluted water. 7. Progress can be blamed for the environmental problems. 8. Transport is a major source of environmental pollution. 9. Exhaust gases contain poisonous carbon dioxide, which prevents the emission of the earth's heat into space. 10. The pollution from industry can occur intentionally or unintentionally. 11. Sometimes accidents cause leakage of toxic waste into the water supply. 12. At a rough estimate, no less than five million tons of oil are discharged into seas and oceans each year. 13. One litre of oil makes one million litres of fresh water unfit for drinking. 14. The volume of both industrial and domestic waste has increased dramatically over the past 50 years. 15. Sulphur dioxide and nitrogen oxides lead to acid rain. 16. Thebalance of nature within any ecosystem depends on the complex interaction between millions of species. 17. The death of one species could threaten the survival of hundreds of others. 18. Changes in the populations of microorganisms may cause major changes on the earth and its atmosphere. 19. Once the last member of a species has died, that species is lost forever. 20. We must try to protect even the ugliest insects. 21. The genetic resources are the least renewable of all.

<== попередня сторінка	\|	наступна сторінка ==>
Text 1. MAN AND HIS ENVIRONMENT	\|	IV. Fill in the spaces with the suitable words and word combinations

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