Zoology Crossword

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Across
  1. 5. single species with a strong environmental impact
  2. 8. has plates or scales covering skin
  3. 9. animal at a food chain's top
  4. 12. the seeking out and eating of live plants
  5. 13. relationship where one benefits without affecting others
  6. 16. organism that is both male and female
  7. 17. has feathers and lays hard-shelled eggs
  8. 19. plant and flesh eater
  9. 20. relationship between organisms of multiple species
  10. 21. relationship where one benefits and others are harmed
  11. 22. study of animals
Down
  1. 1. regulating ability of the internal environment
  2. 2. study of heredity
  3. 3. receives stimulus and then sends a message to control center
  4. 4. plant eater
  5. 6. receives message from control center and helps restore homeostasis
  6. 7. flesh eater
  7. 10. predator's food source
  8. 11. has gills when lung but lungs as adult
  9. 14. relationship where everyone benefits
  10. 15. study of body structure and function
  11. 18. study of chemical processes in animals