Elephant Alarm Call for Humans

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Across
  1. 3. Large mammal known for its trunk, tusks, and intelligence.
  2. 7. A warning of danger.
  3. 14. Convert a message or signal into intelligible language.
  4. 15. Clearly defined or identified.
  5. 16. Delicate or precise, not immediately obvious.
  6. 17. A vocalization or cry made by an animal.
  7. 18. Vibrations travelling through a medium, perceived by hearing.
  8. 19. Acquired by experience, study, or being taught.
  9. 20. The possibility of suffering harm or injury.
Down
  1. 1. Mental action or process of acquiring knowledge and understanding.
  2. 2. East African country where the key research took place.
  3. 4. Relating to or characteristic of people.
  4. 5. Experimental technique involving replaying recorded sounds.
  5. 6. Deep, continuous resonant sound made by elephants.
  6. 8. Systematic investigation to establish facts or reach new conclusions.
  7. 9. An animal that naturally preys on others.
  8. 10. Inborn or natural quality or ability.
  9. 11. State of keeping careful watch for possible danger.
  10. 12. Relating to or produced by the voice.
  11. 13. Insects known to elicit a specific alarm response in elephants.