I don think it needs one

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Across
  1. 3. a form of education
  2. 7. a strong wind
  3. 11. arachnid
  4. 12. a large spotted cat
  5. 13. male of the species
  6. 15. non-powered aircraft
  7. 16. largest rowing boat
  8. 17. chemical element ag
  9. 19. a male hen
  10. 20. domesticated animal
Down
  1. 1. reads radiation
  2. 2. a plant with long green fruits
  3. 4. daily periodical
  4. 5. term used when something is egg-shaped
  5. 6. a large melon made of water
  6. 8. the seventh planet on the solar system
  7. 9. a common spice
  8. 10. a miniature toy person
  9. 14. an olden anesthetic
  10. 18. emptiness