Strange Energy

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Across
  1. 3. gathered
  2. 4. waterfall
  3. 8. not natural
  4. 9. returned to what it was like before
  5. 11. affected by the tide
  6. 12. floated through the air
Down
  1. 1. wavering, on the brink of
  2. 2. hardly
  3. 5. very tired
  4. 6. passed through
  5. 7. persuaded
  6. 10. fierce