Across
- 3. table found either in soil or bedrock
- 4. groundwater pulled by gravity,flows downward through the soil
- 6. a factor in an ecosystem created by the presence and roles of other living things
- 7. the organic componet of soil
- 8. number of species in a ecosystem
- 11. a layer of soil that remains frozen, even in the summer
- 13. neutral what ph is best for growing plants
- 14. bedrock is broken down by rain,wind,frost and snow
- 15. a layer below the litter
- 16. the water found in the earth's crust
- 17. water carried into lower layers of soil of bed rock
Down
- 1. a nonliving factor
- 2. the gases in the atmosphere that absorb or reflect infrared radiation
- 4. water that reaches the ground in liquid or solid form
- 5. upper layer of soil
- 9. below the topsoil
- 10. a layer of rock
- 11. all members of a species living in one ecosystem or habitat
- 12. a cloud at ground level
- 16. which biome has the thickest topsoil