Across
- 4. A resource that cannot be recycled or reclaimed
- 6. The kind of power generated by dams/water
- 7. Fossil fuel composed mostly of dead plant matter
- 8. Mining the earth for resources is ____ harmful to the environment.
- 11. A resource that can be regrown, reused, or recycled
- 12. The state of matter you most often find oxygen or CO2 in on earth
- 14. type of mining done beneath the earth's surface
- 18. returning land to its pre-mined, original state
- 19. Extracting metal from ore by heating and melting it
- 20. another name for oil resources: p______
Down
- 1. Raw materials from the earth that are useful to humans: natural ___
- 2. The tendency for shared resources to be depleted because of a few selfish entities: ___ of the commons
- 3. A way to extract gold and other precious metals from crushed rock in water
- 5. Resource gathering done by sprinkling a solution on a pile of ore: heap ___
- 9. type of mining done above ground
- 10. Rock containing metal or minerals that can be profitably extracted
- 13. caused by the uneven heating of the earth
- 15. an aggressive and polluting form of mining: mountaintop ___
- 16. A section of ore that is profitable to mine: ore ___
- 17. A fossil fuel often used for heating: __ gas