Energy

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