Is a decrease in crop yields a result of ozone depletion?

• A. No
• B. Yes
• C. Only with high temperatures
• D. Depends on region

Answer: (B)

Increased UV-B radiation at the surface is the key idea. When the ozone layer thin s, more UV-B reaches plants. This higher UV-B can damage plant cells, reduce photosynthesis, and trigger oxidative stress. The result is slower growth and lower yields because the plant’s energy production and development are impaired. Different crops respond to UV-B to varying degrees, and the exact impact depends on species, exposure, and environmental factors, but the mechanism is real and can lead to yield reductions. So the statement is true: ozone depletion can contribute to lower crop yields. The other options miss this broader, plant-wide effect—UV-B stress isn’t limited only to high temperatures, and while region and conditions influence how much yield loss occurs, the underlying link between ozone depletion and higher UV-B that can reduce yields remains valid.