Roots part one

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Across
  1. 4. a break
  2. 6. An inheritance coming from a father
  3. 10. a cell formed by the union of two gametes
  4. 11. of hidden meaning
  5. 16. pertaining to the stomach
  6. 17. to argue against
  7. 18. a wise person
  8. 19. existing in one state
  9. 22. a plant that grows in a dry climate
  10. 23. headache
  11. 25. to eat quickly
  12. 26. relating to heredity encoded in the genes
  13. 28. to throw someone/something out
  14. 29. complete change of form
Down
  1. 1. an order or instruction
  2. 2. abnormal indigestion
  3. 3. one who fights with firsts for sports
  4. 5. to express the opposite of
  5. 7. involving two or more countries
  6. 8. a plant that lives exclusively on air
  7. 9. war like
  8. 12. an image
  9. 13. relating to motherhood
  10. 14. fear of death
  11. 15. minute floating aquatic animals
  12. 20. able to use both hands equally
  13. 21. to go beyond the limits
  14. 24. the study and history of words
  15. 27. afraid of foreigners