In a transect across the 98th meridian, from west to east, which of the following gives the correct sequence of soil orders?
A) Alfisols, Aridisols, Ultisols
B) Aridisols, Oxisols, Mollisols
C) Aridisols, Spodosols, Ultisols
D) Aridisols, Mollisols, Alfisols
E) Alfisols, Mollisols, Aridisols

Question

Quizplus · Accepted Answer

According to the USDA Soil Taxonomy System, the soil order sequence from west to east along the 98th meridian is Aridisols (western desert regions), Mollisols (grasslands in central regions), and Alfisols (forests in eastern regions). Therefore, option D, which has the sequence of Aridisols, Mollisols, and Alfisols, is the correct answer. The other answer choices have incorrect sequences.

In a Transect Across the 98th Meridian, from West to East