Final answer:
The song "Where Have All the Flowers Gone" by Pete Seeger deals with themes of war, loss, and the cyclical nature of human conflict, vividly portraying the human costs associated with warfare.
Step-by-step explanation:
The song "Where Have All the Flowers Gone" by Pete Seeger is a poignant reflection on the cycles of war and peace, illustrating a theme of loss and the futility of conflict. It narrates a cycle of questions and answers, each verse building upon the last to highlight the unending pattern of young soldiers going to war, not to return. The overarching theme of the song is about the consequences of war and its impact on humanity and nature.