Exam 4: The Terrestrial Environment

The greatest limitation faced by terrestrial organisms is desiccation.

Organisms that live in aquatic systems experience limited temperature fluctuations due to water's

An E horizon is more likely to develop in grassland soils than in forest soils.

Trees allocate most of their tissue mass to supportive and conductive tissues in the trunk.

Soil in regions with high rainfall or in low-lying areas associated with poor drainage form through the process of

The most shallow soils occur in or on

Soils with a pH greater than 7 are considered to be ________.

In high-latitude habitats,forest canopies that have leaves positioned at an angle will absorb light more effectively.

Regions that are subjected to heavy volcanic activity have dark soils called ________.

Under which conditions are the processes of weathering,leaching,and input of organic material from plants into soil maximized?

A sequence of horizontal layers of soil is referred to as a soil ________.

Ions carrying a positive charge are cations.

Poorly drained soils or soils saturated by water tend to be yellowish-brown or reddish.