Answer: Stanzas are separated by empty line spaces.
Step-by-step explanation:
In poetry, a stanza is a separation technique that is used to separate a couple of lines from other group of lines by empty line spaces. Each different group of line is known as a Stanza.
Just as a paragraph is used in prose, so is a stanza in poetry.
So, where one stanza ends, there is an empty line space separating it from the beginning of another stanza.