In an Experiment, Researchers Subjected Frogs to Various Levels of the Herbicide

question 167

Multiple Choice

In an experiment, researchers subjected frogs to various levels of the herbicide atrazine while keeping all other variables constant.This is an example of a _______ experiment.

• A) controlled
• B) repeated
• C) laboratory
• D) comparative
• E) biased

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Definitions:

Internal

Existing or situated within the confines of an object, individual, or group, often referring to inner qualities or operations.

External

Originating from or existing outside oneself or the subject being considered, often influencing it from the outside.

Stable Internal

Characteristics or attributes within a person that are enduring and consistent across different situations, influencing behavior and attitudes.

Unstable External

Situations or factors outside an individual's control that are unpredictable and can affect their life or decisions.