Question 1

What are the six main horizons found in soils? Briefly describe each.

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Question 2

Describe and explain the distribution of soil orders across the United States.

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Question 3

What are some of the concerns regarding the rate and amount of soil loss in the United States.What does a cost benefit analysis of soil loss prevention show?

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Question 4

These hydric soils are often found in bogs and often have anaerobic conditions during the growing season.

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Histosols are organic soils that form in areas with high moisture content and low oxygen levels. They are commonly found in bogs, swamps, and marshes, where anaerobic conditions prevail during the growing season.

Question 5

Soil science is an interdisciplinary study that incorporates aspects of physics,chemistry,biology,mineralogy,hydrology,taxonomy,climatology,and cartography.Briefly describe how these various fields may be beneficial to the study of soils.

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Question 6

Warming temperatures have accelerated the thawing of Gelisols.This is of particular concern because

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Gelisols contain a large amount of carbon, so the release of carbon dioxide and methane into the atmosphere as they thaw could contribute to further warming of the climate.

Question 7

What is the predominant soil order in the area in which you live? Describe the activities that occur on these soils that reflect the characteristics thereof.

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Question 8

What are the five primary soil forming factors? Describe each using examples.

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Question 9

What are some of the biggest challenges related to soil conservation and management in the coming decades?

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Question 10

Describe the NRCS Soil Taxonomy.

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Question 11

List and briefly describe the various chemical properties used to differentiate soils.

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Question 12

List and briefly describe the various physical properties used to differentiate soils.

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Quiz 18: The Geography of Soils