When Soil Is Eroded from Farmland

question 9

Multiple Choice

When soil is eroded from farmland,

• A) The nutrient-rich topsoil is least affected.
• B) Crop yields and crop nutritional quality may be reduced.
• C) New soil quickly forms replacing that which is lost.
• D) All of the choices are correct.

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Definitions:

Construct

An abstract concept or theoretical entity that is created for the purpose of research or theory development.

Operational Definition

A clear, detailed description of how variables in a study are measured or manipulated.

Quasi-Experimental Design

A research method that attempts to establish cause-and-effect relationships but does not utilize random assignment to control groups.

Random Assignment

A method used in experiments that allocates participants to different groups purely by chance, reducing bias.