Across
- 1. (clocks) control cycles of internal change
- 4. signals travel to and from between animals
- 7. groups lions live in
- 9. animal that gets eaten by another animal
- 11. behavior/ interaction between same species
- 13. animals without a backbone
- 14. summer reduced activity some animals do
- 16. fixed object an animal uses to find its way
- 18. a collection of similar cells in the body
- 19. A cell with a nucleus
- 20. a behavior from experience or observation
- 22. chemicals animals produce for communication
- 23. (language) used to send visual message
Down
- 2. tissues carry out special function of body
- 3. travel from place to place in a response
- 5. made up of many cells
- 6. animals with a backbone
- 8. (rhythm) a biological daily cycle
- 10. winter inactivity some animals experience
- 12. animal that eats another animal
- 15. behavior influenced by genes
- 17. area occupied by animal(s) & excludes
- 21. an organism in early stage development