Question 1

________ are the dominant factor that influence the vertical gradient of light in terrestrial environments.

Accepted Answer

Plants

Question 2

________ is a property of soils that is determined by the different sizes and types of particles in soils.

Accepted Answer

Soil texture

Question 3

The ________ conditions within a region impose the primary constraints on plant and animal life.

Accepted Answer

physical

Question 4

The layer of unconsolidated debris overlaying the layer of hard, unweathered rock is called the ________.

Accepted Answer

The answer of The layer of unconsolidated debris overlaying the...

Question 5

It is agreed that soil is teeming with life and is a three-dimensional unit, having length, ________, and depth.

Accepted Answer

The answer of It is agreed that soil is teeming...

Question 6

________ particles control the water-holding capacity of soil and ion exchange.

Accepted Answer

The answer of ________ particles control the water-holding capacity of...

Question 7

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

Accepted Answer

The answer of The two physical factors that vary most...

Question 8

Distinct layers in the soil that are created by localized chemical and physical processes are called ________.

Accepted Answer

The answer of Distinct layers in the soil that are...

Question 9

The ________ point is the stage at which the moisture level in soil decreases to a level at which plants can no longer extract water.

Accepted Answer

The answer of The ________ point is the stage at...

Question 10

Patches of light that penetrate the canopy of a forest and reach the forest floor are called ________.

Accepted Answer

The answer of Patches of light that penetrate the canopy...

Question 11

A collective sequence of horizontal layers in soil is a ________.

Accepted Answer

The answer of A collective sequence of horizontal layers in...

Question 12

________ is the process of maximum leaching from the E horizon of a soil profile.

Accepted Answer

The answer of ________ is the process of maximum leaching...

Question 13

A rock that is broken into smaller fragments as a result of freezing and thawing has experienced ________ weathering.

Accepted Answer

The answer of A rock that is broken into smaller...

Question 14

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

Accepted Answer

The answer of The wavelengths that make up the visible...

Question 15

The aboveground parts (e.g., leaves)of most plants are coated with a waxy ________ that reduces water loss.

Accepted Answer

The answer of The aboveground parts (e.g., leaves)of most plants...

Question 16

The parent material of soils may originate from underlying bedrock or be deposited by glacial, eolian (wind), gravitational, or ________ processes.

Accepted Answer

The answer of The parent material of soils may originate...

Question 17

________-sized particles are between 0.002 and 0.05 mm in diameter.

Accepted Answer

The answer of ________-sized particles are between 0.002 and 0.05...

Question 18

Although it can be used to determine important physical and chemical properties, ________ has little effect on soil function.

Accepted Answer

The answer of Although it can be used to determine...

Question 19

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

Accepted Answer

The answer of When the amount of water in a...

Question 20

The movement of solutes through the soil is known as ________.

Accepted Answer

The answer of The movement of solutes through the soil...

Quiz 4: The Terrestrial Environment