Angelina is worried about her roommate, katie. katie has been skipping meals lately, and when she does go to the dining hall, she throws away most of the food she gets. angelina has noticed that katie is often tired and listless, and she has been losing weight. katie is exhibiting symptoms of which condition?

Even though the ostrich is a flightless bird, ostriches still possess wings that stretch approximately two meters across when fully extended. scientists speculate that when dinosaurs became extinct, some of the birds that lived during that time became land dwellers since they were able to consume the food that the dinosaurs once ate. over time, these species grew larger and heavier. eventually, the ostrich species became too big to fly. the wings found on ostriches are known as a. analogous structures. b. homologous structures. c. vestigial structures. d. symmetrical structures.