Scan page 845. Notice there is an illustration with labels, text with headings, and a key. Use these features to help you make sense of this diagram.
1. Start by reading the title. Then read the text in the top left corner.
2. Begin to examine the diagram and the text related to it.
If you get confused, reread parts of the diagram or try starting your reading in a different place.
Summarize how the aqualung works. How did the diagram and other organizational features help you understand this device?