In Macbeth, Act IV, Scene I. Why do the witches use elements of all these different animal's to create their evil stew "fillet of a fenny snake/ . . . Eye of newt and toe of frog, / wool of bat and tongue of dog"

Need answer asap plz! the descriptions of the west wind in the first two sections of “ode to the west wind” are dominated by images of a. violence, death, decay, and burial. c. peace, birth, growth, and blossoming. b. sleep, dreams, fantasy, and reverie. d. translucence, light, color, and radiance.