Environmental and Natural Resource Study Guide
velocity. b. improper tillage techniques. c. loss of the best part of the soil. d. loss of vegetation due to lack of fertilization. 225.Topsoil losses in the United States are 1/8 inch but the. restoration rate is… a. 30-50 years per inch. b. 50-60 years per inch. c. 75-90 years per inch. d. 400-500 years per inch. 226. An example of man-made ... ................
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