Exam 4: The Terrestrial Environment

The surface layer of soils is referred to as the

The leaf area index (LAI)of a temperate deciduous forest is highest during

The soil horizon in which leached mineral particles such as clay and salts tend to accumulate is the

The wavelengths that make up the visible light spectrum are referred to as ________ radiation.

________ is a process common to soils found in humid environments in the tropical and subtropical regions.

The process of mineral particles such as clay and salts accumulating in the B layer of soils is referred to as ________.

Eluviation refers to the leaching of minerals and finer soil particles from the upper layers to the lower layers of soil.

The smallest particles occurring in soil are referred to as

The amount of water retained by the soil between field capacity and wilting point is the available water ________.

Calcification results in the buildup of dissolved alkaline salts in the B horizon of soils.

When the amount of water in a soil exceeds what the pore space can hold,the soil is ________.

Generally,an ion with a ________ positive charge and ________ size will bind most strongly to a soil particle.

As soil acidity increases,the concentration of ________ increases.

The E horizon of soils is characterized by the maximum amount of

Which of the following soils holds the most water?

Soil is an abiotic environment.

The two physical factors that vary most in terrestrial environments are ________ and ________.

Soil particles are classified on the basis of

Negatively charged particles in the soil are referred to as

Soils developing from sand and silt carried by the wind are referred to as