Final answer:
Changes in strategies, tactics, and action plans may be required in firefighting efforts in subfreezing temperatures or high-humidity and high temperature environments due to the weather.
Step-by-step explanation:
In firefighting efforts in subfreezing temperatures or in high-humidity and high temperature environments, changes in strategies, tactics, and action plans may be required just because of the weather. Firefighters need to adapt their approaches and techniques to effectively combat fires under these challenging conditions. For example, in subfreezing temperatures, firefighters may need to use different methods to prevent hoses and equipment from freezing, while in high-humidity and high temperature environments, they may need to take extra precautions to prevent heat exhaustion or dehydration.