Across
- 3. when it rains a lot and water covers land that is normally dry
- 4. gas layer surrounding the Earth
- 6. a long period of dry weather when there is not enough water
- 8. the world around us
- 9. if you find out something that nobody knew about before
- 10. a glass house in which plants grow
- 13. the top layer of something
- 15. the average height of the sea
- 16. to lower, if something goes down
- 17. to put your name on a document
Down
- 1. to get used to a new situation
- 2. to give energy to a machine
- 4. a different course or choice
- 5. to agree to something or help
- 6. ten years
- 7. to become liquid
- 10. a large mass of ice that moves slowly down a mountain valley
- 11. gas that is sent into the air
- 12. to keep in and not let out
- 13. to continue to live and not to die
- 14. a group of people who travel to work together in one car