Here's why:
* Stanzas are groups of lines in poetry, often separated by a blank line. They help create structure and rhythm in poems.
* Expository prose is written in paragraphs. Paragraphs are groups of sentences that develop a single idea or aspect of a larger topic. They are used in essays, articles, reports, and other forms of non-fiction writing.
So, while poetry uses stanzas, expository prose uses paragraphs to organize its content.