Easy

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Across
  1. 3. Relatively hard, naturally formed mineral or petrified matter; stone.
  2. 5. A stratagem for catching or tricking an unwary person.
  3. 8. One who can give a firsthand account of something seen, heard, or experienced
  4. 10. An airplane or hydroplane. Synonym-level.
  5. 12. One that is invested with this power, especially a government or body of government officials
  6. 16. To remain alive or in existence
  7. 18. A shaking or vibrating movement, as of the earth.
  8. 20. Active participation in events or activities, leading to the accumulation of knowledge or skill
  9. 23. Damage or harm done to or suffered by a person or thing
  10. 25. Separate or detached.
  11. 27. To come into contact with forcefully; strike
  12. 28. One of a series of long curved bones occurring in 12 pairs in humans and extending from the spine to ortoward the sternum.
  13. 30. To expel a current of air, as from the mouth or from a bellows
  14. 33. A group of interacting, interrelated, or interdependent elements forming a complex whole
  15. 36. Far from others or difficult to get to; remote
  16. 37. To break without complete separation of parts
  17. 38. Possessing or displaying a distinctive feature to an extreme degree
  18. 40. The part of a year or of a day during which a school holds classes.
Down
  1. 1. To go below the surface of water or another liquid
  2. 2. The forward part or surface, as of a building.
  3. 4. A generally hard, strong, durable, malleable alloy of iron and carbon
  4. 6. Having or capable of exerting power.
  5. 7. Resulting from or acting with ill-considered haste or boldness.
  6. 9. The deliberate destruction of property or obstruction of normal operations, as by civilians or enemy agents in a timeof war.
  7. 11. Something, especially a structure, that provides cover or protection, as from the weather
  8. 13. Kept within certain limits; limited
  9. 14. To withdraw from or vacate a place or area, especially as a protective measure
  10. 15. The greatest distance under given weather conditions to which it is possible to see without instrumental assistance.
  11. 17. All that is left after other parts have been taken away, used up, or destroyed.
  12. 19. Of, subject to, or caused by an earthquake or earth vibration.
  13. 21. The two organs of respiration, filling most of the chest cavity inside the rib cage and above the diaphragm
  14. 22. To ask or order to return
  15. 24. A reverse or opposing action.
  16. 26. Consisting of or making up a large mass
  17. 29. To hit sharply, as with a hand, fist, weapon, or implement
  18. 31. A long period of abnormally low rainfall, especially one that adversely affects growing or livingconditions.
  19. 32. Armed fighting; combat
  20. 34. Something brought about by a cause or agent; a result.
  21. 35. Sports & Games A group on the same side, as in a game.
  22. 39. A tropical cyclone occurring in the western Pacific or Indian Oceans.