Students in a college earth science class were asked on an exam to concisely describe the relationship between CFCs and ozone destruction. Analyze the following four students’ responses and rank them from best to worst. Justify your answer choices.
a) CFCs are manufactured gases that destroy the ozone and produce oxygen.
b) Chlorine forms from the disintegration of manufactured gases. The chlorine reacts with ozone molecules to form two gases that cannot block incoming UV radiation.
c) Oxygen molecules are broken down by UV radiation to free oxygen atoms that combine with chlorine monoxide to form new oxygen molecules and free chlorine. Chlorine helps break down CFCs with UV radiation.
d) UV radiation breaks apart complex manufactured chlorofluorocarbons into its constituent atoms, including chlorine. Chlorine destroys ozone molecules as it cycles through a pair of reactions that produce free oxygen molecules.
Finally, write your own answer to the question.
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