Choose the set of answers that best completes the sentences below: Stratospheric

Question

Choose the set of answers that best completes the sentences below:

Stratospheric ozone depletion was the result of a chemical reaction caused by

["chlorofluorocarbons", "polar clouds", "ultraviolet light"]

which is ["a natural phenomenon", "due to increased solar activity", "a human-made atmospheric pollutant"] .

Evidence of this depletion led to regulations stopping the use of CFCs. This is an example of ["science informing policy", "scientific uncertainty", "natural variation in the environment"]         .

Explanation / Answer

Stratospheric ozone depletion was the result of a chemical reaction caused by chlorofluorocarbons which is a human-made atmospheric pollutant. Evidence of this depletion led to regulations stopping the use of CFCs. This is an example of science informing policy.

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