Natural Resource
Across
- 3. burning the natural gas () the air
- 6. from plants and animals
- 9. energy from water
- 10. to re-use or to give a new purpose
- 12. energy from the sun
- 14. a replaceable resource
- 16. (gold, diamond, copper)
- 17. ball of fire
- 19. (power)
Down
- 1. a useful object to create things
- 2. from trees
- 4. not replaceable
- 5. synonym (material)
- 7. heat from the earth
- 8. (coal, gas, oil)
- 11. to protect or keep safe
- 13. the amount of () was harmful to the earth
- 15. in the air
- 18. also in the air