Which products of clouroflourocarbon reaction are harmful towards the emvironment and or humans?

The reaction of chlorofluorocarbons (CFCs) in the atmosphere primarily leads to the production of chlorine atoms, which catalyze the depletion of the ozone layer. This depletion allows increased ultraviolet (UV) radiation to reach the Earth's surface, leading to harmful effects such as skin cancer, cataracts, and negative impacts on ecosystems. Additionally, some breakdown products of CFCs can contribute to greenhouse gas effects, exacerbating climate change. Overall, the environmental and health risks associated with CFCs underscore the importance of phasing them out.