Across
- 4. human growth
- 5. very dry less than 10 inches of rain
- 6. broadleefed trees
- 7. resources of an ecosystem
- 8. states that energy cant be destroyed or created
- 12. a tool that can be used to trace the flow of energy though an ecosystem
- 14. the protection and wise use of natural resources
- 15. enclosed body of water where the river flows into the ocean
- 16. combustion,decomposition,fossil fuels
- 17. area of land that is saturated for part of the year
- 19. evergreens that are made of needles
- 20. the number and variety of species
- 22. everything that has mass
- 23. lichen,moss,and other things that grow on rocks.
Down
- 1. has many grasses and few trees
- 2. low average temperature and very little percipitation.
- 3. process in which matter and nutrients slowly build over water
- 8. states that mass can't be destroyed or created.
- 9. evaporation,transpiration,respiration
- 10. most of earth's atmosphere
- 11. the ability to do work and enables organisms to use matter and energy from their environment.
- 13. a region of earth where the climate determines the type of plants that live there
- 18. when rocks become ecosystems
- 21. low average temperature and more percipitation then tundra