Both "The Dust of Snow" and "Fog" utilize nature to affect character mood and behavior. In "The Dust of Snow," snow evokes tranquility and rejuvenation, shifting a negative day to a positive one. The snow represents nature's restorative power, highlighting life's small joys for the poet. In "Fog," the fog symbolizes obscurity, both literally and metaphorically, by concealing the surroundings and generating mystery and stillness. These poems demonstrate nature's ability to elevate, conceal, or mirror emotional states, emphasizing its deep link to human experience.