SOIL AS AN ECOSYSTEMS

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