What is EACH stanza in the cremation of sam mcgee about?

"The Cremation of Sam McGee" by Robert Service consists of several stanzas, each contributing to the narrative. The first stanza introduces Sam McGee, who is from Tennessee and finds himself in the harsh Yukon environment, expressing his disdain for the cold. The following stanzas detail Sam's death from the cold and the speaker’s promise to fulfill Sam's wish to be cremated. The final stanzas depict the speaker's struggle to honor this promise amidst the eerie setting, culminating in the revelation that Sam's spirit haunts him, highlighting themes of friendship, mortality, and the extremes of the wilderness.