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Questions for Discussion: Organic Farming: Conserving Top Soil

What impact do various farming methods have on soil quality and erosion?
What are the positives and negatives about farmers growing one crop in an area year after year?
What does manure do to promote soil fertility and moisture? Is all manure organic?
Are there areas of the world that are experiencing loss of vital resources such as soil, forests, and potable water? Where are they? Should the U.S. government assist these countries? If so, in what ways?
Could a dust bowl occur today? Explain.