Tough Cookie

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Across
  1. 1. distant and isolated
  2. 3. high in the sky
  3. 4. hydrates through the stem
  4. 5. round and thousands of years old
  5. 6. look to see the top
  6. 8. vision turned video
  7. 10. stays on track
Down
  1. 1. rock and royal
  2. 2. stands out with shouts and louds
  3. 5. is on first
  4. 7. in physics and the sea
  5. 8. peace of mind
  6. 9. Oil or voltage run