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МатематикаПохожие
- protection -
- development
- pollution -
- destruction -
- disappearance -
- creation
- 1. Industrial enterprises.
- 2. Development of civilization.
- 3. Influences the nature.
- 4. Harmful substances.
- 5. Forests disappear.
- 6. Air pollution.
- 7. The destruction of the ozone layer.
- 8. Disappear forever.
- 9. To create a system.
- 10. Serious problem.
- 11. Rivers and lakes dry up.
- 12. Universal concern.
