Ecological problems
Содержание
- 2. Since ancient times Nature has served Man, being the source of
- 3. Large cities with thousands of smoky industrial enterprises appear all over
- 4. The by-products of their activity pollute the air we breathe, the
- 5. Every year world industry pollutes the atmosphere with about 1000 million
- 6. Vast forests are cut and burn in fire. Their disappearance upsets
- 8. Environmental protection is of a universal concern. That is why serious
- 9. The international organisation Greenpeace is also doing much to preserve the
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