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

---

Definitions:

External Cost

A cost incurred by a third party who did not agree to the action that caused the cost, often associated with negative environmental impacts or health hazards.

Antibiotic-Resistant

Referring to bacteria that have evolved to survive exposure to antibiotics that were previously effective in killing them or inhibiting their growth.

Government Policy

Actions and decisions made by the government to achieve certain goals or address specific issues within a country.

Antibiotic Overuse

The excessive or inappropriate use of antibiotics, contributing to antibiotic resistance, where bacteria evolve to become resistant to these medications.