Waiting for hours to see you? is it a complete sentence or a fragment

American history (is, are) studying the american colonies.

Read the excerpt from "save the redwoods."another, one of the finest in the grove, more than three hundred feet high, was skinned alive to a height of one hundred and sixteen feet from the ground and the bark sent to london to show how fine and big that calaveras tree was—as sensible a scheme as skinning our great men would be to prove their greatness. which  best  describes how the excerpt appeals to readers’ emotions? the excerpt provides facts about the tree, which impresses readers’ scientific minds. the excerpt describes how the tree traveled to london, which excites the readers’ sense of adventure. the excerpt compares the tree to a person, which makes readers feel sympathetic toward the tree. the excerpt explains how to skin a tree, which makes readers feel awed at the height of the tree.

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.