Science Crossword Puzzle

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Across
  1. 6. Environment
  2. 9. Learned
  3. 10. Instinct
  4. 13. Adaptation
  5. 14. Behavioral
  6. 16. Internal
  7. 18. Migration
  8. 19. Innate
  9. 20. Behavior
Down
  1. 1. Homeostasis
  2. 2. Camouflage
  3. 3. Hibernation
  4. 4. Dormant
  5. 5. Animal
  6. 7. Structural
  7. 8. Survival
  8. 11. Habitat
  9. 12. Physical
  10. 15. Mimicry
  11. 17. Genetic