Soil scientists from which country first conceived the idea that soils were natural bodies?
United States
Belgium
Russia
France
In which of the following epipedons is the organic matter typically the lowest?
Umbric
Mollic
Histic
Melanic
Ochric
Which soil moisture regime has the highest soil moisture levels?
Aquic
Udic
Ustic
Xeric
Aridic
Which of the following subsurface diagnostic horizons would you expect to find in a highly weathered soil of the humid tropics?
Natric
Spodic
Cambic
Salic
Oxic
Which of the following diagnostic horizons would likely NOT restrict root growth in soils?
petrocalcic
salic
placic
albic
fragipan
Which of the following temperature regimes would provide the warmest and least variable soil temperatures?
thermic
hyperthermic
isothermic
isohyperthermic
mesic
Which of the following categories of Soil Taxonomy provides the greatest specificity of soil properties?
Series
Great Group
Family
Suborder
Order
