General knowledge crossword

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Across
  1. 2. The earth is one of these
  2. 4. The second plant from the sun
  3. 5. The month of Valentine's Day
  4. 6. Two children from one mother born at the same time
  5. 7. A cat with orange fur and black stripes
  6. 11. A huge body of salt water
  7. 12. Superhero that shoots webs
  8. 14. Parent's brother
  9. 15. The first large meal of the day
  10. 17. Used to blow your nose
  11. 18. The number of legs a spider has
Down
  1. 1. How many days are in the week
  2. 2. Holds ink and used to write
  3. 3. The tallest mountain in the world
  4. 8. A popular fruit that is often red or green
  5. 9. The capital of New Zealand
  6. 10. A flightless bird and a nickname for a New Zealander
  7. 11. Second colour in the rainbow
  8. 13. Pokemon with lightning bolt shaped tail
  9. 16. The longest river in the world