Across
- 3. the buildup of this can cause eutrophication
- 4. populations are close together
- 6. helps an ecosystem remain stable
- 10. eruption which can result in primary succession
- 11. lab equipment used for precise measuring
- 13. type of graph which shows comparisons
- 15. organism which exhibits random distribution
- 16. the group of flowers which received plain water
- 17. lab equipment used for mixing and heating
- 18. the greatest consumer of water
- 22. ability of an ecosystem to resist change/ remain unchanged over time
- 24. the total number of individuals of a species within a set habitat or area
- 25. lab equipment used to hold samples
- 26. situation which can result in secondary succession
- 27. the current world population is 8.1 _________
- 28. type of graph which shows change over time
- 29. type of graph which compares parts to the whole
- 31. a succession sequence that takes place after a land clearance event
- 32. the group of flowers which received fertilizer
Down
- 1. biogeochemical cycle which involves the breakdown of rock
- 2. the first species to colonize an area
- 5. bacteria play a key role in this biogeochemical cycle
- 7. positive answer to a population growth problem
- 8. water which is safe to drink
- 9. organism which exhibits uniform distribution
- 12. type of plant rotated by farmers to restore nitrogen to the soil
- 13. example of a keystone species
- 14. a succession sequence that occurs on land that has not had plants or soil in the past or has been cleared of its plant and vegetation by volcanic eruption
- 19. biogeochemical cycle which is influenced by the use of fossil fuels
- 20. organism which exhibits clumped distribution
- 21. the ability of an ecosystem to recover from external disturbances
- 23. populations are spread apart
- 30. country who enforced strict population laws
- 31. a series of steps used by scientists to solve a problem