What diction in the charge of the light brigade suggest chaos or noise​

In this excerpt from "dover beach" by matthew arnold, which two lines or sets of lines suggest that the speaker has undergone a loss of faith? the sea of faith was once, too, at the full, and round earth's shore lay like the folds of a bright girdle furled. but now i only hear its melancholy, long, withdrawing roar, retreating, to the breath of the night-wind, down the vast edges drear and naked shingles of the world. ah, love, let us be true to one another! for the world, which seems to lie before us like a land of dreams, so various, so beautiful, so new, hath really neither joy, nor love, nor light, nor certitude, nor peace, nor for pain; and we are here as on a darkling plain swept with confused alarms of struggle and flight, where ignorant armies clash by night.

In marigolds, which character can be described as having a laugh so loud that the great oak seemed to laugh with it?

Explain what effect the repetition of the lines brennan on the moor, brennan on the moor, bold and undaunted stood young brennan on the has on the meaning of the poem. answer asap. you!