Each sentence below comes from a different presentation. Based on these sentences, which organizational structure does each presentation use? "We will examine the cultures of native peoples from Africa, Asia, and Europe. " "We will look at a timeline of events that led to the sinking of the Titanic ocean liner in 1912. " "Industrial pollution has led to global warming, which in turn is heating up the Earth's atmosphere. " "I will first point out the many similarities between 1920s fashions and clothing design today, and then I will discuss the many ways that fashion has changed since that time. ".