Across
- 2. this are very big and cold but they are melting
- 7. all the humans live there and is very big
- 8. it is all the gases in general.
- 10. this are every time more common and kill a lot of people
- 11. it can go around the earth more than 5 times a second and is used by you every day
- 12. it has glass walls and glass roof
- 15. company that study the world from the space and satellites
Down
- 1. group of trees
- 3. a part of a water cycle in which water evaporates
- 4. red and hot thing that burn
- 5. they absorb the carbon dioxide and turn it into oxygen
- 6. ispt is changing a lot and it is the temperature
- 9. the most important substance and it is drinked by everybody
- 13. a very important fuel very used by humans
- 14. a super big star that reflect rays to the earth and it heat it