Why does the conch change colors in lord of the flies?

Ihave to write a narrative poem for an english assignment, but i cant come up with any topics/ideas for the poem. any topics?

The hawks are an allegory for the dangers the boy is about to encounter in the desert.which quotation from the alchemist best supports this statement? "sit down. we'll have something to drink and eat these hawks,' said the alchemist.""he watched the hawks as they drifted on the wind. although their flight appeared to have no pattern, it made a certain kind of sensetthe boy.""suddenly, one of the hawks made a flashing dive through the sky, attacking the other. as it did so, a sudden, fleeting image came to tboy."o "who dares to read the meaning of the flight of the hawks? ' he "

Exit "families were being further torn asunder, and those left behind knew no more about their own fate than they did of the loved ones moving on." this passage from the text best represents which of the following literary devices used by the author? a. the motif of racial prejudice b. the dramatic irony of the audience knowing more than the characters c. the motif of displacement and separation d. the theme of conflict between those leaving and those being left behind