Across
- 3. reduces individual fitness of others in a population
- 4. the movement of a population to a new area
- 7. exchange of recognizable signals
- 9. a piece of land "owned" by a certain species or population
- 13. "how" and "what" questions, immediate stimulus
- 15. an automatic or built in behavior
- 16. animal learns nit to respond to a repeated stimulus
- 17. non-mutual relationship, one species benefits at expense of the host
- 18. chemical signals conveying information between species
- 20. a change of structure of a gene
Down
- 1. relationship where both partners benefit
- 2. "why" questions, how does behavior contribute to survival and reproduction
- 5. plant roots grow to Earth's center, due to gravity
- 6. modified by experience, variable behavior
- 8. social attachment at a sensitive period
- 10. a change in direction
- 11. orientation of a plant toward light
- 12. relationship where 1 organism benefits and the other is neither harmed or benefited
- 14. random movement in response to a stimulus
- 19. animals active at night