species, forests, amount, carbon dioxide, greenhouse, heating effect, warming, environment, effect, smog, pollute, halocarbone, riches, nature.
1. … effect the atmosphere is in warming the Earth’s surface.
2. The … of … in the atmosphere has been increasing by 0.4 % a year.
3. This … is the basic theory concerning global…
4. There are many gases in the atmosphere: methane, …
5. Crop production, sea levels depend on greenhouse …
6. People lived in harmony with … for thousands of years.
7. Many people think that natural … are unlimited.
8. Smoky enterprises … air.
9. A lot of cities suffer from …
10. Beautiful old … disappeared forever.
11. Some rare … of animals and birds disappeared forever.
12. The protection of … is a universal problem
