Across
- 4. organism with optimal growth in an extreme environment
- 5. located above oil deposits
- 6. energy in a transformed state
- 9. minimal impact on the surface
- 11. energy collected from the movement of water
- 13. energy created from heat
- 14. created by the remains of death plants and animals due to pressure and heat
Down
- 1. Energy forms that can be used directly as they appear in nature
- 2. energy collected from non ending sources
- 3. when mining ceases the mine floods
- 7. black subtance extracted by drilling into the Earth
- 8. energy collected from a limited source
- 10. a organic chemical compound composed fo hydrogen and carbon atoms
- 12. most abundnt fossil fuel
- 15. The ability to work