In 1983, a population of dark-eyed junco birds became established on the campus of the University of California, San Diego (UCSD), which is located many miles from the junco's normal habitat in the mixed-coniferous temperate forests in the mountains. Juncos have white outer tail feathers that the males display during aggressive interactions and during courtship displays. Males with more white in their tail are more likely to win aggressive interactions, and females prefer to mate with males with more white in their tails. Females have less white in their tails than do males and display it less often. Refer to the paragraph on dark-eyed junco birds. The UCSD campus male junco population tails were, on average, 36 percent white, whereas the tails of males from nearby mountain populations averaged 40—45 percent white. If this observed trait difference were due to a difference in the original colonizing population, it would most likely be due to .

In another country by ernest hemingway (excerpts) excerpt 1 "in the fall the war was always there, but we did not go to it any more. it was cold in the fall in milan and the dark came very early. then the electric lights came on, and it was pleasant along the streets looking in the windows. there was much game hanging outside the shops, and the snow powdered in the fur of the foxes and the wind blew their tails. the deer hung stiff and heavy and empty, and small birds blew in the wind and the wind turned their feathers. it was a cold fall and the wind came down from the mountains." excerpt 2 "the people hated us because we were officers, and from a wine-shop someone called out, "a basso gli ufficiali! " as we passed. another boy who walked with us sometimes and made us five wore a black silk handkerchief across his face because he had no nose then and his face was to be rebuilt. he had gone out to the front from the military academy and been wounded within an hour after he had gone into the front line for the first time. they rebuilt his face, but he came from a very old family and they could never get the nose exactly right. he went to south america and worked in a bank. but this was a long time ago, and then we did not any of us know how it was going to be afterward. we only knew then that there was always the war, but that we were not going to it any more." 19 select the correct answer. what important fact about the wounded soldiers is reflected by the repetition of the bolded sentences in the excerpts from "in another country" by ernest hemingway? a. it establishes the irony that, although the wounded soldiers have physically left the warfront, the war continues to haunt them psychologically. b. it shows the gradual loss of hope and growing depression of the wounded soldiers and their need for distractions. c. it establishes the wounded soldiers’ determination to shun war and disobey military commands to return to the front after they recover. d. it shows the wounded soldiers’ sadness and disappointment at the lack of gratitude from the people they risked their lives to protect. e. it shows the wounded soldiers’ belief that the war would never end, even as thousands of soldiers were killed or wounded and sent to hospitals. reset next