Across
- 3. type of power
- 6. your body is made from them
- 7. when a volcano wakes up
- 8. the study of ancient objects and ruins
- 10. you do this to sugar in your tea
- 11. the thickest part of a tree
- 13. it helps your body fight against diseases
- 14. you can see it when there is a thunderstorm
- 16. land in the middle of the sea
Down
- 1. you need it to breathe
- 2. Ukraine has this type of climate
- 4. destruction of forests
- 5. the opposite of solid
- 9. cold
- 12. a group of mountains
- 15. a mountain