1. Soils: From whence all Creation Comes ENS102 March 27, 2006

2. Soil was an essential component of Creation 1:1- In the beginning God created the heavens and the earth. 1:7- And God made the firmament and separated the waters which were under the firmament from the waters which were above the firmament. And it was so. 2:7- then the LORD God formed man of dust from the ground, and breathed into his nostrils the breath of life; and man became a living being.

3. Soil ?#1. What is soil?

4. Soil is; A physical entity with real structure and characteristics

5. Deserts Grasslands Tropical Deciduous Coniferous Structure varies

6. ?#2 How does soil structure form? Weathering –Chemical –Physical Biologicalaction

7. Weathering Physical Weathering forms soil –Granite = igneous rock Feldspar Mica Quartz

8. Biological Action Primary succession Humification –The breakdown of detritus to humus by detritivores Mineralization –The breakdown of humus to mineral soil by decomposers

9. Results of Biological Action What do you notice about these two samples?

10. Soil Formation Summary Physical Biological

11. Soil Formation Summary Physical Biological

12. Soil is; An Ecosystem

13. ?#3 What is the function of soil? A water and nutrient retention system

14. Water/Nutrient Retention Infiltration Leaching –Soil texture and porosity Permeability Water holding capacity –Dry to waterlogged –Sand to clay Evaporative water loss Aeration vs compaction pH

15. Water/Nutrient Retention Clay Silt Sand

16. Soil is; A link between ecosystem components

17. Soil is;? Take out a piece of paper and write a poem or a story about the structure, process, or importance of soil.

18. For Wed - Friday Wednesday - Soil Problems Continued data collection and analysis. If you need anything you need to let me know on Wed. as your groups are on your own in Lab on Thursday. Friday Read Chapter 9 and watch online video