The "A" Horizon or Combined "O/A" Horizons of the Soil

question 17

Multiple Choice

The "A" horizon or combined "O/A" horizons of the soil are known as the ______.

• A) subsurface horizon(s)
• B) illuviation layer(s)
• C) regolith
• D) epipedon
• E) colloidal layer(s)

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Definitions:

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