Which of the following is NOT a result of ozone layer depletion?

The depletion of the ozone layer primarily leads to an increased amount of ultraviolet (UV) radiation reaching the Earth's surface. This increase in UV radiation is linked to several environmental and health issues.

One significant consequence is the rise in skin cancer rates among humans. The ozone layer serves as a protective shield, absorbing a substantial portion of the sun's harmful UV radiation. As the layer thins, more UV radiation can penetrate the atmosphere, leading to higher incidences of skin cancer due to increased exposure.

Another major impact of ozone depletion is the disruption of natural processes, such as photosynthesis in plants, particularly in some sensitive species. Increased UV radiation can harm photosynthetic organisms, potentially affecting their growth and productivity.

While higher UV radiation levels can potentially affect crop yields, the assertion that ozone layer depletion directly causes decreased crop yields of staple crops like wheat, corn, and soybeans is not as clearly established or direct as the other consequences mentioned. Factors influencing crop yields are multifaceted, including environmental conditions, agricultural practices, and pest control, making it less directly associated with ozone depletion than increased skin cancer and plant photosynthesis disruption. Therefore, this choice is not a result typically attributed to the effects of ozone layer depletion.