The real harmful effect of the release of chlorofluorocarbons into the atmosphere is that it eventually causes

The release of chlorofluorocarbons (CFCs) into the atmosphere causes a harmful effect by depleting the ozone layer. The ozone layer is a natural layer of gas in the Earth's stratosphere that protects life on Earth by absorbing harmful ultraviolet (UV) radiation from the sun. CFCs break down ozone molecules, causing the ozone layer to become thinner, which allows more UV radiation to reach the Earth's surface. This can lead to an increase in skin cancer, cataracts, and other harmful effects on plants and animals. Therefore, the real harmful effect of the release of CFCs is that it eventually causes excessive ultraviolet light from the sun to reach the Earth's surface.