Why Does Removal of Vegetation Cause More Surface Runoff and Thus

question 33

Multiple Choice

Why does removal of vegetation cause more surface runoff and thus more erosion?

• A) It permits more water to directly strike the ground and run off.
• B) All of the plants covering the surface slow the runoff.
• C) Roots of the plants hold the soil together and prevent erosion.
• D) It reduces the amount of vegetation available for forest fires.
• E) It results in increased grazing and compaction of the soil.

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Definitions:

Honesty Survey

A method of collecting data which relies on the self-reported truthfulness of participants regarding sensitive or personal issues.

Experimenter Bias

A process where the scientists performing the research influence the results, intentionally or unintentionally, towards their expected outcome.

Control Group

In experiments, a group of subjects that does not receive the treatment being tested, used for comparative purposes against the experimental group.

Social Desirability Bias

The tendency of respondents to answer questions in a manner that will be viewed favorably by others, potentially skewing research results.