An optional answer key master can be found on page 79. ... 27 Mollusks and Segmented Worms UCP.1, UCP.5, A.2, C.4–C.6, F.3, G.2 ... REVIEWING BIOLOGY CHAPTER 1 1 Aug 28, 2008 · CHAPTER 17 Organizing Life’s Diversity CHAPTER 18 Viruses and Bacteria CHAPTER 19 Protists CHAPTER 20 Fungi CHAPTER 21 What is a Plant? CHAPTER 22 The Diversity of Plants CHAPTER 23 Plant Structure and Function CHAPTER 24 Reproduction in Plants CHAPTER 25 What is an Animal? CHAPTER 26 Sponges, Cnidarians, Flatworms, and Roundworms CHAPTER 27 ... Computer security, cybersecurity or information technology security (IT security) is the protection of computer systems and networks from the theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide.