A group of students was designing an experiment to test the effect of smoking on grass frogs. They hypothesized that keeping the frogs in a smoke-filled environment for defined periods of time would result in the animals developing lung cancer. However, when they searched for previously published information to support their hypothesis, they discovered they were wrong in their original assessment. Even though they were never going to go ahead with their experiment (so as not to harm frogs needlessly), they knew that a more likely outcome of putting carcinogens in the air would be the development of

Question

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The experiment was designed to test the effect of smoking on grass frogs, and the hypothesis was that it would result in the animals developing lung cancer. However, the students discovered that amphibians do not have lungs like humans do, and they breathe through their skin. Therefore, exposure to carcinogens would more likely result in the development of skin cancer.

A Group of Students Was Designing an Experiment to Test