Across
- 3. the largest and deepest of Earth´s of 5 oceans
- 6. not harmful to the environment
- 8. destruction of large areas of trees
- 10. to be in danger of extinction
- 11. a company which organizes your holiday
Down
- 1. there are 3 climate zones: tropical, polar and …
- 2. a place where you stay over night
- 4. when air, water, etc. are dirty
- 5. the safest means of transport
- 7. a piece of land surrounded by water
- 9. a thing for transporting people or goods, such as a car, lorry, etc.