| Environmental Science: A Study of Interrelationships, 8/e Eldon Enger,
Delta College Bradley F. Smith,
Western Washington University
Soil and Its Uses
Chapter ObjectivesAfter reading this chapter you should be able to:
Describe the geologic processes that build and erode the Earth's surface. |
| | | List the physical, chemical, and biological factors involved in soil formation. |
| | | Explain the importance of humus to soil fertility. |
| | | Differentiate between soil texture and soil structure. |
| | | Explain how texture and structure influence soil atmosphere and soil water. |
| | | Explain the role of living organisms in soil formation and fertility. |
| | | Describe the various layers in a soil profile. |
| | | Describe the processes of soil erosion by water and wind. |
| | | Explain how contour farming, strip farming, terracing, waterways, windbreaks, and conservation tillage reduce soil erosion. |
| | | Understand that the misuse of soil reduces soil fertility, pollutes streams, and requires expensive remedial measures. |
| | | Explain how land not suited for cultivation may still be productively used for other purposes. |
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