L6-8 Crossword Puzzle

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Across
  1. 3. A square has 4 of these (7)
  2. 5. Land between two mountains (8)
  3. 6. To walk (7)
  4. 8. You use this to wash your hands (8)
  5. 12. A long square (7)
  6. 14. This reptile can drop its tail (6)
  7. 15. To show (7)
Down
  1. 1. The planet we live on (6)
  2. 2. A gift (6)
  3. 3. A shape with 6 squares (6)
  4. 4. To copy (8)
  5. 7. Rice, cereal, sand (6)
  6. 8. A LOT a LOT of dangerous water (8)
  7. 9. A plant with no flowers (6)
  8. 10. Fire needs this to burn (6)
  9. 11. This is found in oysters (8)
  10. 13. A big, heavy stick (8)