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1. To sing without opening your mouth
5. To jump or move somewhere suddenly
6. To stop
8. Without water or liquid on the surface
9. If the Earth wasn't at an angle of 23.5° to the sun the Earth wouldn't have different ...
10. To burn or shine very brightly or strongly
11. If the Earth was closer to the sun, there would be to much of them
14. Without it the harmful solar radiation would pass
16. The sound that is made when something heavy falls
17. Small villa
18. If the Earth will stop ... one side of the word would be permanently hot

1. One of the twe part of the Earth
2. Where you keep your mobile watch
3. Without it the criminal would commit crimes freely
4. It probably will continue to expand
6. To stop before you do something, especially because you are nervous or not sure
7. Without it we would fly
12. Part inside
13. A star after its explosion
15. Where the pedestrians walk