Answer:
The poem dust of snow tells us about the curative power of nature. Nature has the cure for everything whether it is a bad mood or illness. The poet is going through one such bad day when a crow suddenly shook down on him dust of snow from a hemlock tree. The snow instantly makes him happier.
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It means that so many people die long before their body does. They live in a little box in front of a TV set and eat their TV dinners, waiting to die
This is a narrative essay, she is explaining a story and narrating it.