Unit 21 Review Questions

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. Which of the following accelerates the formation of soil?

Low precipitation rates correct incorrect

Absence of organisms correct incorrect

Location on a steep slope correct incorrect

High temperature correct incorrect

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. In which soil horizon would you expect to find the most organic matter?

O horizon correct incorrect

A horizon correct incorrect

C horizon correct incorrect

E horizon correct incorrect

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. Illuviation occurs in the:

O horizon correct incorrect

A horizon correct incorrect

E horizon correct incorrect

B horizon correct incorrect

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. Often red tinged, Oxisols predominate in:

arid and semiarid climates correct incorrect

boreal forests at high latitudes correct incorrect

wet tropical and subtropical areas correct incorrect

deciduous forests at midlatitudes correct incorrect