Freon was banned primarily to protect which atmospheric layer?

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Multiple Choice

Freon was banned primarily to protect which atmospheric layer?

Explanation:
Freon (CFCs) are very stable in the lower atmosphere, so they can ride up into the stratosphere. There, ultraviolet light breaks them apart and releases chlorine atoms. Those chlorine atoms kick off catalytic cycles that destroy ozone molecules (O3) faster than they form, thinning the ozone layer. The ozone layer is the region that shields life on Earth from much of the sun’s harmful UV radiation, so banning Freon was aimed at protecting that layer. In short, the chemical damage occurs to ozone in the stratosphere, and preserving the ozone layer prevents increased UV exposure.

Freon (CFCs) are very stable in the lower atmosphere, so they can ride up into the stratosphere. There, ultraviolet light breaks them apart and releases chlorine atoms. Those chlorine atoms kick off catalytic cycles that destroy ozone molecules (O3) faster than they form, thinning the ozone layer. The ozone layer is the region that shields life on Earth from much of the sun’s harmful UV radiation, so banning Freon was aimed at protecting that layer. In short, the chemical damage occurs to ozone in the stratosphere, and preserving the ozone layer prevents increased UV exposure.

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