Final answer:
The repetition of the phrase 'Tide rises and falls' in a poem underscores the natural cycles and can evoke rhythm and movement, mirroring the alternating tides caused by the Moon's gravitational pull.
Step-by-step explanation:
The repetition of the phrase 'Tide rises and falls' in a poem can significantly impact its overall message and emotional effect. This phrase emphasizes the natural, continuous, and inevitable cycle of the tides, which is a metaphor for the ebb and flow of life's events or emotions. The repeated reference to tides, caused by the gravitational pull of the Moon on Earth, can also evoke a sense of rhythm and movement within the poem, mirroring the alternating rising and falling motion of the sea level. Furthermore, adjusting the poem's structure, such as changing the line breaks or indentation, can alter the poem's energy, music, tone, and emotional impact as seen in the exercise that asks how the poem changes when lines are rearranged. Structure and repetition both play critical roles in how the poem flows and resonates with the reader.