Answer and Explanation:
Hello. You did not inform the poem to which this question refers, which makes it impossible for it to be answered extensively.
However, the different line lengths affect the reading of the poem because they provide quick thinking along with slow and more relaxed thinking. This is because the long sentences, allow the reading to be more reported, promoting a slower feeling and reasoning. In contrast, phrases of short length, parent more accelerated ideas that require a quick reaction.