A researcher collected frog and water samples from eight widely separated sites across the United States and studied the incidence of abnormalities in frogs exposed to different levels of the herbicide atrazine.This was a(n) _______ experiment.
A) comparative
B) controlled
C) inductive
D) logic
E) deductive

Question

Quizplus · Accepted Answer

The researcher is comparing the incidence of abnormalities in frogs across different sites with varying levels of atrazine exposure, making it a comparative experiment. Comparative experiments involve observing two or more groups under different conditions to see how they differ, which is what the researcher is doing by studying frogs at different sites with different levels of atrazine exposure.

A Researcher Collected Frog and Water Samples from Eight Widely