science/SS crossword

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Across
  1. 2. called black land
  2. 3. 1st area of Mesopotamia
  3. 6. change every 6 hours
  4. 8. invaders of Egypt for 100 years
  5. 9. a reed plant used like paper
  6. 10. language used for ancient egypt
  7. 12. can go fast and slow
  8. 16. one of the 7 planets
  9. 17. 1/4 of the year is one of these
  10. 18. also called yellow river
  11. 19. ruled for 66 years and was very successful
  12. 20. North america,south america, Asia and I guess u know the rest
Down
  1. 1. king Tuts companion
  2. 4. 23.5 is the earths tilt
  3. 5. 1st every female pharaoh
  4. 7. cant be melted
  5. 11. biggest tomb ever
  6. 13. bucket on a pole for gathering water
  7. 14. 1st emperor
  8. 15. stored food