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Questions and Answers
What is the highest level of soil classification according to the USDA Soil Taxonomy?
What is the highest level of soil classification according to the USDA Soil Taxonomy?
- Great Group
- Suborder
- Family
- Order (correct)
How many soil orders are included in the USDA Soil Taxonomy?
How many soil orders are included in the USDA Soil Taxonomy?
- 5
- 15
- 10
- 12 (correct)
What is the next level of soil classification below 'Great Group' in the USDA Soil Taxonomy?
What is the next level of soil classification below 'Great Group' in the USDA Soil Taxonomy?
- Order
- Family
- Suborder
- Subgroup (correct)
What distinguishes suborders from each other within the soil orders?
What distinguishes suborders from each other within the soil orders?
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Study Notes
Soil Classification According to USDA Soil Taxonomy
- The highest level of soil classification according to the USDA Soil Taxonomy is the Order.
- There are 12 soil orders included in the USDA Soil Taxonomy.
- The next level of soil classification below 'Great Group' is the Subgroup.
- Suborders within the soil orders are distinguished from each other by differences in diagnostic horizons, moisture regimes, and temperature regimes.
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