Across
- 3. Why a behavior occurs
- 6. Nonliving factor
- 7. Developmentally fixed behaviors
- 12. Pattern of spacing among individuals in a population
- 14. Stimulus generated and transmitted from one animal to another
- 16. Abbreviation for the total primary production in an ecosystem
- 17. How a behvior occurs
- 19. Directional movement towards or away from stimulus
- 20. An animal's response to a stimulus
- 21. The total amount of energy an animal uses in a unit of time
Down
- 1. Living factor
- 2. A group of individuals of the same species living in an area
- 4. Random movement in response to a stimulus
- 5. Long-lasting behavioral response to an individual
- 8. Organism that cannot make its own food
- 9. All the living and nonliving things in an area
- 10. Selection for life history traits that are sensitive to population density (no hyphen)
- 11. Number of individuals per unit area
- 12. Organisms that get energy from detritus
- 13. Selection for life history traits that maximize reproductive success (no hyphen)
- 15. Abbreviation for the Gross Primary Product minus the energy used by primary producers
- 18. Behaviors that depend on environmental influence