Across
- 3. people coming into a country
- 4. individuals compete or fight over the same resourses
- 8. plant eater
- 9. eats dead things
- 10. first organisms to come into an area after a disaster
- 12. predator eats prey
- 15. transfer of energy from one level to the next
- 16. non living factor that affects population growth
- 18. water released by plants
- 19. convert nitrogen gas into ammonia(NH3)
- 20. people coming into a country
- 22. purpose/job in an ecosystem
- 24. number of individuals per unit of area
- 26. natural disasters: fire, flood, earthquake.tsunami, hurricane
- 29. relationships with organisms
- 30. symbiotic relationship when both organisms benefit
- 31. living factor that can affect population
- 35. benefits one species while the other is harmed
- 36. gets energy directly form the sun (lowest producer)
- 37. the study of the ecosystem;organism and the environment
Down
- 1. eats/hunts
- 2. different feed;do not get energy directly from the sun
- 5. only 10% of energy at any given level is transferred to the next
- 6. the number of individuals an enviroment can support
- 7. the rate or numbers that animals go through season to season
- 10. photosynthesis-sun-chemosynthesis-chemical energy
- 11. comes after succession; land that made a comeback
- 13. benefits one species while the other is harmed
- 14. benefits one organism and does not harm or benefit the other organism
- 17. self feeding
- 21. slower process than secondary succession due to no soil to start process
- 23. nitrogen fixing
- 25. how humans release water
- 27. eats both plant/ meat
- 28. cones that open and spread seeds in a fire
- 32. only eats meat
- 33. each step in the food chain
- 34. gets eaten/hunted