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What is the strongest evidence that CFC are in the stratosphere?
Satellite measurements of light passing through the atmosphere
How does CFC reach the stratosphere?
CFCs are released into the atmosphere from human activities like air conditioning and refrigeration. Once in the atmosphere, they are carried up into the stratosphere by wind and air circulation. In the stratosphere, CFCs can remain for many years, allowing them to break down ozone molecules through chemical reactions.
What depletes ozone in stratosphere?
Chemicals such as chlorofluorocarbons (CFCs) and other ozone-depleting substances released into the atmosphere can break down ozone molecules in the stratosphere. These chemicals react with ozone, causing it to break apart and reduce the overall levels of ozone in that layer of the atmosphere.
Which of the four layers of the atmosphere does it ban for the aerosol sprays that contain CFC?
It is the stratosphere where the ozone layer is located that is affected by aerosols containing CFCs. When released, CFCs break down ozone molecules, leading to ozone depletion and increased UV radiation reaching the Earth's surface.
Which of the following chemicals is harmful to humans in the troposphere but helpful in the stratosphere?
Chlorofluorocarbons (CFCs) are harmful in the troposphere as they contribute to ozone depletion and climate change. However, in the stratosphere, CFCs break down ozone molecules, contributing to the formation of the ozone layer that absorbs harmful UV radiation from the sun.
