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Across 2. any system of persons or things ranked one above another. 6. one of the independent variables in a set of parametric equations 9. a connection, association, or involvement. 10. a vehicle, especially one for children, having one large front wheel and two small rear wheels, propelled by foot pedals. 13. Rare . ancient history; the study of antiquity 14. of, pertaining to, or utilizing ultrasound. 16. giving or disposed to give freely; generous; liberal. 20. existing, occurring, or living at the same time; belonging to the same time 22. a state of society without government or law. 23. conferring benefit; advantageous; helpful: the beneficial effect of sunshine. 24. the correspondence in size, form, and arrangement of parts on opposite sides of a plan 25. the combining of the constituent elements of separate material or abstract entities into a single or unified entity

Down 1. a written account of another person's life 3. of, pertaining to, or characteristic of surrealism 4. to impose, place, or set over, above, or on something else. 5. an utterance of good wishes. 7. the act of introducing or the state of being introduced. 8. the act or process of dividing; state of being divided. 11. legal soundness or force. 12. capable of being excited. 15. having ”mixed feelings about someone or something; being unable to choose between two courses 17. to warn in advance. 18. harmony of or agreement in feeling, as between persons or on the part of one person with respect to another. 19. the quality or state of being deformed, disfigured, or misshapen. 21. of different kinds, as two or more things; differing one from another