The limited horizonation in the soil type pictured below occurs because
A)the subsurface is covered by permafrost.
B)precipitation is limited.
C)volcanic ash has penetrated very deeply beneath the surface in this soil type.
D)leaf litter is so abundant that it tends to leach downward across all of the layers.

Question

The limited horizonation in the soil type pictured below occurs because 
A)the subsurface is covered by permafrost. 
B)precipitation is limited. 
C)volcanic ash has penetrated very deeply beneath the surface in this soil type. 
D)leaf litter is so abundant that it tends to leach downward across all of the layers.

Quizplus · Accepted Answer

The limited horizonation in the soil type pictured is likely due to limited precipitation. Without sufficient rainfall, the soil layers do not have enough water to naturally separate and form distinct horizons. This can result in a more homogenous soil profile with limited differentiation between layers.

The Limited Horizonation in the Soil Type Pictured Below Occurs