In the event of global warming, food production might be negatively affected by all of the following except?

The correct answer highlights that decreased UV radiation resulting from increased ozone is not a direct consequence of global warming that would negatively impact food production. In fact, while ozone in the upper atmosphere protects the Earth from harmful ultraviolet (UV) radiation, a warming climate generally leads to the expansion of ozone in the troposphere, which can have harmful effects on crops due to increased UV radiation exposure.

On the other hand, the other options represent direct ways in which global warming can negatively affect food production. Increased occurrence of pests is linked to warmer temperatures, which can expand their geographic range and increase their reproduction rates. Changes in precipitation patterns can lead to droughts or floods, negatively impacting crop yields. Soil degradation due to temperature increases can reduce soil fertility and water retention, further complicating food production systems.

Thus, only decreased UV radiation from increased ozone does not directly connect to adverse impacts on food production in a warming world.