Across
- 4. when two species live close together
- 5. Hot or cold
- 7. species both benefit
- 8. effect trapping heat
- 9. when water covers the soil
- 12. dense,leafy coverings
- 14. exclusion principle no two species can occupy the same nich in the same habitat
- 15. zone photosynthesis cant occur
- 16. boreal forest
- 17. temperature, rain, and other extreme conditions
- 19. when organisms live near the bottom of lakes,streams, or oceans
- 20. when herbivors feed on plants
Down
- 1. where an organism lives
- 2. ability to survive under enviromental circumstances
- 3. what we need in life
- 6. zone sunlit region near the surface in which photosynthesis in which photosynyhesis can occur
- 7. climatic condition in a relatively small area
- 10. species single species
- 11. when a predator feeds on its prey
- 13. what an organism does and how it interacts
- 18. special kind of wetland