He's trying to describe a physical feeling that he's experiencing. He used a metaphor to try to explain his heartache and what he feels about his loss.
It is customary that the introductory paragraph should include the thesis statement, a kind of mini-outline for the paper. It tells the reader what the essay is about. The last sentence of this paragraph must also contain a transitional "hook" which moves the reader to the first paragraph of the body of the paper.
Given the previous information, we could conclude that stating all three of the main supporting details to an argument is a constituent of a good introductory paragraph because that would be considered as the thesis statement, which tells the reader what the essay is about.
So, the final answer is:
Yes , True
While various symbols are connected to grass in this poem, the overall meaning of grass in this poem is that is is used as a metaphor for life. The poem begins referring to grass as God-given, and as a child. The middle of the poem references grass growing, and being a part of all people's lives. The poem then discussed graying hair, and ultimately uses grass as a symbol for death. It follows each stage of life, and shows that grass is universal, and a part of all people's lives, just as life and death are universal.