What environmental impact is associated with the use of CFCs and HCFCs?

The destruction of the ozone layer is a significant environmental impact associated with the use of chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs). These compounds are known for releasing chlorine and bromine atoms when they are broken down in the upper atmosphere. These released atoms can catalyze the breakdown of ozone molecules, leading to a thinning of the ozone layer, which plays a crucial role in protecting life on Earth from harmful ultraviolet (UV) radiation.

The depletion of the ozone layer can result in increased UV exposure, which is linked to higher rates of skin cancer, cataracts, and other health issues, as well as adverse effects on ecosystems and biodiversity.

Other options, while related to environmental issues, do not capture the specific impact attributed to CFCs and HCFCs. For instance, heat retention in buildings is more related to insulation and energy efficiency rather than ozone-depleting substances. Increased indoor air pollution generally involves different types of pollutants and materials within buildings, not specifically CFCs or HCFCs. Global warming is primarily associated with greenhouse gases like carbon dioxide and methane, rather than ozone-depleting substances. Thus, the recognition of the destruction of the ozone layer