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Across 2. close ecological relationship between two organisms of different species 8. relationship where both organisms benefit 9. ______________ growth - S-shaped, slow growth, exponential growth, then leveling off 14. population ____________ - way in which organisms are spread in an area 15. two organisms fight for the same resources 17. population ____________ - number of individuals living in a defined space 19. ______________ growth - J- shaped, population size increases dramatically over time 20. carrying _______________ - maximum number of organisms an area can support 21. movement of individuals out of a population 22. all the factors an organism needs to survive 23. one organism captures and eats another 24. ecological ______________ - species in similar niches but different geographical locations 25. density ___________________ - are affected by the number of individuals

Down 1. _______________ succession - damaged area was previously uninhabitated 3. _______________ succession - damaged area where soil was left intact 4. all the biotic and abiotic factors in the area where an organism lives 5. one organism benefits, the other is harmed 6. ______________ species - first organisms that live in a previously uninhabited area 7. competitive _____________ - two species competing for the same niche 10. one organism benefits, the other is unaffected 11. density ___________________ - not affected by the number of individuals 12. _____________ factor - factor that has the biggest effect in keeping a populatio`n down 13. survivorship _____________ - diagram showing the number of surviving members over time 16. movement of individuals into a population 18. sequence of biotic changes that regenerate a damaged community