ENADE Geografia Practice Questions - ENADE Geografia - Exame Nacional De Desempenho Dos Estudantes Exam

A shallow A humic horizon resting directly over an impermeable Bt argillic horizon with high base saturation (V > 50%), 2:1 smectite clays, and high cation exchange capacity. A B natric horizon marked by extreme prismatic structure, high exchangeable sodium percentage (ESP > 15%), and exceptionally low permeability in semi-arid depressions. An organic Histosol horizon formed under permanent water saturation with high organic carbon content, low bulk density, and negligible mineral weathering alteration. A deep, well-drained B latossólico (Bw) horizon with low cation exchange capacity, advanced desilication, and dominance of iron/aluminum oxides and kaolinite.