Me out what role does harmony play in a composition?

Which element of musical notation does this image represent? a. sharp sign b. flat sign c. natural sign d. ledger lines

In "thirty are better than one" 1963 by andy warhol describe to what degree this image depicts rhythm or pattern

Read the excerpt from the building of manhattan. the heater cranked the blower handle to force air up through the fire and heat the rivets in the furiously burning bed of coals. he knew how hot the rivets were by the way their color changed. cherry-red rivets were 1,000 to 1,950 degrees fahrenheit. at the right moment he grabbed one in his tongs and tossed it to the catcher. which phrase cannot be changed in a paraphrase of this text? “the furiously burning bed of coals” “by the way their color changed” “1,000 to 1,950 degrees fahrenheit” “force air up through the fire and heat”