N43

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Across
  1. 5. A device used to record sound.
  2. 6. Sounds that bounce back after hitting something.
  3. 7. Small leftover pieces of food.
  4. 10. Food that remains after eating.
  5. 11. The way two or more beings act toward each other.
  6. 13. Providing safety or defense.
  7. 14. To run or move after something to catch it.
  8. 15. To watch carefully.
  9. 16. Lasting only for a short time.
  10. 17. Following movements over time.
  11. 19. Living permanently in one area.
Down
  1. 1. Facts or signs that show something is true.
  2. 2. Individuals who search ahead to find targets or danger.
  3. 3. Very sharp or high-sounding.
  4. 4. Rare or not commonly seen.
  5. 8. To work together toward a shared goal.
  6. 9. To go down deep underwater.
  7. 12. A person who studies something carefully.
  8. 18. A planned method to achieve a goal.
  9. 20. Finding objects by sending sounds and listening to echoes.