Identify the organizational method used in each of the following sets of main points. Set one: I. The first major cause of airplane crashes is pilot error. II. The second major cause of airplane crashes is weather. III. The third major cause of airplane crashes is mechanical failure. Set two: I. The peak of Mount Kilimanjaro has a artic climate with snow, ice, and violent winds. II. The middle of Mount Kilimanjaro has a rain forest climate with lush vegetation and diverse animal species. III. The base of Mount Kilimanjaro has a bushland climate with grassy pastures and farming communities. Set three: I. The Chinese film industry began in the early 20 th century. II. The first golden period of Chinese cinema occurred during the 1930s. III. The second golden period occurred in the years after World War II. IV. The Chinese film industry was scaled back during the 1960s and 1970s. V. Today Chinese films are in another golden period of international acclaim.