Exam 12: Soils

This soil order is developed from volcanic ash.

In the study of soil, the "action" can be found in the soil chemistry. Explain the importance of two of the following three terms with respect to soil chemistry: colloids, acidity/alkalinity, cation exchange capacity.

Dead plant parts are known as ________ when they accumulate on the surface of the soil.

The main pedogenic regimes do NOT include ________.

The weathered layer of loose inorganic material overlaying unfragmented rock below is ________.

Gelisols are ________.

Soils are considered part of the

The capability of a soil to attract and exchange cations is known as the ________.

Humus eventually becomes litter.

Based on the pH scale soils are neutral at ________.

________ are soils of many widely scattered locations whose common characteristic is a lack of maturity.