Whitman claims to
know exactly what the
grass is.

“Death is a major theme in this poem, which takes the child's innocent query into a much darker place. ... Whitman showcases his belief that death marks a beginning rather than an ending. The grass grows, dies, and is reborn in a constant cycle, and Whitman believes that human life is the same.” “Whitman continues the metaphor of seeing grass as the rebirth of the dead into the cyclical nature of life. He makes this a hopeful message by saying that death is actually “luckier” than life. The way that Whitman speaks about matter never disappearing just being reused and reformed feels almost scientific.” Feel free to rephrase or change up words as you see fit

Perpendicular line? no.