Which of the following environmental problems is a direct result of the release of chlorofluorocarbons (CFCs) into the atmosphere?

Acid rain is primarily caused by the release of sulfur dioxide (SO2) and nitrogen oxides (NOx) into the atmosphere, which react with water vapor to form sulfuric and nitric acids. CFCs do not contribute to this process, as they do not produce these acidic compounds, making them unrelated to the phenomenon of acid rain.

Deforestation refers to the clearing of forests for agriculture, urban development, or logging, resulting in habitat loss and decreased biodiversity. While environmental degradation can be linked to various air pollutants, CFCs do not directly cause deforestation; instead, they are associated with atmospheric chemical reactions that impact the ozone layer.

Photochemical smog is caused by the reaction of sunlight with pollutants such as volatile organic compounds (VOCs) and nitrogen oxides, leading to the formation of ozone at ground level. CFCs do not directly contribute to this type of smog formation, as they primarily impact stratospheric ozone rather than ground-level air quality.