Question

stratosphere matches
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Answer 1

Answer:

Scientists know that the rise in the amount of chlorine measured in the stratosphere matches the rise in the amount of stratospheric fluorine, which has different natural sources than chlorine, over the same amount of time. This match points directly at HFCs and HCFCs as the cause.

The greatest Arctic declines are in the winter and spring, reaching up to 30 percent when the stratosphere is coldest

Answer 2

The stratosphere is the second major layer of Earth's atmosphere, just above the troposphere, and below the mesosphere.