Energy review

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Across
  1. 3. coal mining and other things make this
  2. 4. organism that thrives in extreme conditions
  3. 6. a consequence of coal mining
  4. 7. It can't be created nor destroyed
  5. 8. a solid, combustible material made of co2
  6. 10. energy from the sun
  7. 13. what fossil fuels are composed of
  8. 14. energy forms that can be used as found
Down
  1. 1. Ecuador's second most used power
  2. 2. 10% of the world uses it
  3. 5. the way coal is found
  4. 9. the largest reserves are in Venezuela
  5. 10. energy in a transformed state
  6. 11. will replenish within a lifetime
  7. 12. won't replenish within a lifetime