science puzzle

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Across
  1. 4. the interaction between animals of the same species
  2. 10. to travel from one place to another
  3. 13. a organism that eats other organisms
  4. 15. a substance that is released by the body and causes another individual of the same species to react in a predictable way
  5. 16. a period of inactivity in the winter
  6. 17. an area occupied by one or a group of animals that do not allow other members of there species to enter
  7. 19. part of an animal that breaks off
  8. 22. a cell with a nucleus
  9. 23. a behavior that has been learned from experience
  10. 25. a period of inactivity in the summer
  11. 26. animals use clues to find out what time it is
Down
  1. 1. to commutate through poses
  2. 2. a biological daily cycle
  3. 3. behaviors inherited by genes
  4. 5. the process of cells turning into different cells
  5. 6. and animal without a backbone
  6. 7. a group of lions
  7. 8. a group of tissues that carry out special functions
  8. 9. fixed objects an animal uses to find its way
  9. 11. an organism made of many cells
  10. 12. a transfer of signal or message from one animal to another that results in some type of response
  11. 13. the behavior animals use to find mates
  12. 14. an organism in its early stage of development
  13. 18. a group of cells combined
  14. 20. animals that eat other animals
  15. 21. animals that are eaten by predators
  16. 24. an animal with a backbone