The correct answer is D. Chlorofluorocarbons (CFCs).
CFCs are man-made chemicals that were once widely used in refrigerators, air conditioners, and aerosol cans. They are very stable and do not break down easily in the atmosphere. When they reach the stratosphere, they are broken down by ultraviolet radiation and release chlorine atoms. These chlorine atoms react with ozone molecules, destroying them.
SO2 and NO2 are also pollutants that can contribute to ozone depletion, but they are not as effective as CFCs. NO is a naturally occurring gas that does not contribute to ozone
depletion.Ozone depletion is a serious problem that can have a significant impact on human health and the environment. It can increase the risk of skin cancer, cataracts, and immune system problems. It can also damage plants and ecosystems.
There are a number of things that can be done to reduce ozone depletion, including:
- Phasing out the use of CFCs and other ozone-depleting substances
- Reducing emissions of other pollutants that contribute to ozone depletion
- Increasing the use of renewable energy sources
- Planting trees
By taking these steps, we can help to protect the ozone layer and mitigate the effects of climate change.