Exam 15: The Geography of Soils

White to pale hues in soils are generally associated with

Which of the following is false?

A soil order characteristic of the Amazon Basin is a/an

Which pedogenic regime is associated with tropical soils?

Recent, undeveloped soils are known as

The A horizon is usually ________ underlying layers because ________.

Soils characteristic of the northern coniferous forests are the

Salinization is likely to occur

At present, which of the soil orders of Soil Taxonomy occupy the most land area in the United States?

Because Aridisols form in arid environments, they are likely to

Prairie soil can contain evidence of processes that date back

The C horizon lies within the zone of significant biological activity.

Entisols are the least developed soils in the world.

True solum is made up of

Soil is

Which pedogenic regime tends to occur in cool, coniferous forests, and results in acidification of the soil?

Generally speaking, a high cation exchange capacity indicates good soil fertility.

The great grassland soils of the world are called

Horizons develop in soil because of

2.5 cm (1 in) of prime farmland soil can take 500 years to form.