This text is for grade 7 informational reading. While reading, students should cite several pieces of textual evidence to support analysis of what the text says explicitly as well as inferences drawn from the text. Students should also determine two or more central ideas in a text and analyze their development over the course of the text; provide an objective summary of the text, and analyze the structure an author uses to organize a text, including how the major sections contribute to the whole and to the development of the ideas (License: https://creativecommons.org/licenses/by-nc/3.0/)