There is evidence that refrigerants are in the stratosphere.

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Multiple Choice

There is evidence that refrigerants are in the stratosphere.

Explanation:
Refrigerants can reach and persist in the stratosphere because many of them, especially chlorinated ones like CFCs, are extremely stable in the lower atmosphere and have long lifetimes. They aren’t quickly broken down, so they can be transported upward by air currents and accumulate in higher layers over time. There, exposure to UV light can photolyze the molecules and release chlorine atoms, which participate in ozone destruction. Atmospheric measurements have detected these refrigerants in the stratosphere, providing direct evidence of their presence there. This is why the statement is true.

Refrigerants can reach and persist in the stratosphere because many of them, especially chlorinated ones like CFCs, are extremely stable in the lower atmosphere and have long lifetimes. They aren’t quickly broken down, so they can be transported upward by air currents and accumulate in higher layers over time. There, exposure to UV light can photolyze the molecules and release chlorine atoms, which participate in ozone destruction. Atmospheric measurements have detected these refrigerants in the stratosphere, providing direct evidence of their presence there. This is why the statement is true.

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