Soil orders are grouped by:
A)their fertility
B)their color
C)level of horizon development and humus content
D)thickness of the A horizon and latitude

Question

Quizplus · Accepted Answer

Soil orders are primarily categorized based on the level of horizon development and humus content. The thickness of the A horizon and latitude may be factors that differentiate within the orders, but they do not play a primary role in grouping the orders themselves. Fertility and color may also play a secondary role in soil classification, but they are not the primary criteria for grouping soil orders.

Soil Orders Are Grouped By