Across
- 3. succession A series of more-ore-less predictable changes that occur in a community over time
- 4. A relationship in which one organism lives inside or on another organism and harms it
- 9. A relationship between species in which both benefit
- 11. zone where photosynthesis connot occur
- 13. effect allows visible light to enter but traps heat\
- 16. species Changes in the population of a single species
- 18. average conditions over long periods
- 20. An attraction in which one animal feeds on producers
- 23. succession When a disturbance affects a community without completely destroying it
- 24. The day-to-day condition of the Earth's atmosphere
- 27. A relationship in which one organim benefits and the other is neither helped nor harmed
- 28. An ecosystem in which water either covers the soil or is present at or near the surface for at least part of the year
- 29. An attraction in which one animal captures and feeds on another animal
- 30. Any necessity of life
Down
- 1. Any relationship in which two species live closely together
- 2. trees or coniferous produce seed bearing cones
- 4. Includes both phytoplankton and zooplankton
- 5. A plant that sheds its leaves during a particular season
- 6. zone The sunlight region near the surface in which
- 7. Describes what an organism does and how it interacts with the biotic and abiotic factors in the environment
- 8. A material formed from decaying leaves and other organic matter
- 10. environmental conditions vary over small distances
- 12. succession Succession that begins in an area with no remnants of an older community
- 14. Special kind of wetland formed where a river meets the sea
- 15. species The first species to colonize barren areas
- 17. The bottom of a lake, stream, or ocean
- 19. The ability to survive and reproduce under a range of environmental circumstances
- 21. In the chade below the canopy
- 22. a layer of permanently frozen subsoil
- 25. The general place where an organism
- 26. Tall trees form and dense leafy covering