1. The document discusses different types of text structures used in nonfiction writing, including chronological, sequence/order of importance, cause and effect, problem and solution, and compare and contrast. 2. It provides examples and descriptions of each text structure type to illustrate how they are used to organize information and present relationships between ideas. 3. The document concludes with a practice section that provides paragraphs using different text structures and asks the reader to identify the structure used in each example.