Select all of the following statements that are true:
A) Illuviation, the process of dissolution and downward mobilization of minerals in the soil, causes zones of the soil to become leached.
B) Another name for leaching of soils is eluviation.
C) Solifluction is a process where iron oxidizes, resulting in soils that appear a rusty color.
D) Illuvial zones are portions of the soil profile where minerals are deposited.
E) Bioturbation always causes a soil to become more heterogeneous.

Question

Quizplus · Accepted Answer

Illuviation is the process of deposition of minerals, not dissolution and downward mobilization, so statement A is false. Solifluction is a process of soil movement, not oxidation of iron resulting in rusty color, so statement C is false. B is true - leaching is also known as eluviation. D is true - illuvial zones are portions of the soil profile where minerals are deposited. E is false - bioturbation can make a soil more homogenous or more heterogeneous depending on the organism involved.

Select All of the Following Statements That Are True