What is a significant environmental consequence caused by stratospheric ozone layer depletion?

Stratospheric ozone layer depletion has significant environmental consequences, one of the most critical being the increased incidence of skin cancer. The ozone layer serves as a shield, absorbing the majority of the sun's harmful ultraviolet (UV) radiation. With the thinning of this layer, more UV radiation reaches the Earth's surface. Increased exposure to UV radiation is directly linked to higher rates of skin cancers, including melanoma, which is notably dangerous.

Increased UV radiation can also lead to other health issues, such as cataracts and weakened immune responses. This connection emphasizes the importance of the ozone layer in protecting human health, and as such, options related to air pressure, photosynthesis in aquatic plants, or global temperature decreases do not adequately address the primary health risks associated with ozone layer depletion.