Across
- 3. a substances in soil that contains carbon compounds
- 5. rocks and soil particles that make up soil solid
- 8. the ideal percentage of soil minerals in soil
- 9. a natural habitat that includes plants and animals interacting within an environment
- 11. organic materials and biological life that is incorporated into soil
- 12. Mineral substances in soil that are not deriverd from living organisms
Down
- 1. the ideal percentage of water in soil
- 2. stored in the soil for plant use. contains important nutrients
- 4. the ideal percentage of air content in soil
- 6. pores spaces for the exchange of gases
- 7. the soil ecosystem is called?
- 10. the ideal percentage of organic matter in soil