energy source

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Across
  1. 2. natural fuel
  2. 5. not able to use again
  3. 8. preventing waste use
  4. 11. able to use again
  5. 12. to use it for somehting else
  6. 14. affects earth
Down
  1. 1. to use again
  2. 3. the total mass of organisms in a given area or volume.
  3. 4. sun energy
  4. 6. use of nuclear reactions to produce electricity.
  5. 7. earth heat
  6. 9. water power
  7. 10. cut down on ammount used
  8. 13. turbine energy