Energy resource

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Across
  1. 5. will run out
  2. 8. small
  3. 10. protection
  4. 11. ammonite
Down
  1. 1. energy generated or produced by living hydroelectric generate
  2. 2. atomic
  3. 3. blows the tree
  4. 4. out of this world
  5. 6. use again and again
  6. 7. earth heat
  7. 9. again and again
  8. 11. gas