The importance of having a green planet

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Across
  1. 4. Surrounded by sea
  2. 6. Planet
  3. 8. Sun
  4. 10. Knowledge that will help us with travelling
Down
  1. 1. Climbing
  2. 2. We need to protect it
  3. 3. Mini mountain
  4. 5. East
  5. 7. Reuse it
  6. 9. Can guid you