Higher temperatures lead to an increase in which of the following health effects?

The correct answer highlights that higher temperatures can increase absorption rates through the skin. When the body is exposed to elevated temperatures, the skin's permeability can change, allowing substances—including environmental contaminants and chemicals—to be absorbed more readily. This is particularly important for first responders and others working in hot environments, as it can lead to increased risks associated with exposure to hazardous materials.

In hot conditions, the skin becomes more hydrated through sweat and this elevated moisture content can enhance the absorption of different agents. This phenomenon is significant for workers who may come into contact with toxic substances, as their risk of dermal absorption increases with temperature.

While other health effects, such as respiratory issues, muscle fatigue, and dehydration, may also become more prevalent at higher temperatures, they do not directly relate to the increase in absorption rates through the skin in the same manner. Understanding this concept can help individuals in fire and emergency services better prepare for and mitigate risks associated with heat exposure.