<P style="MARGIN: 0in 0in 0pt" class=MsoNormal>From single cells to large, complex ecosystems, the major topics in biology are covered by expert Anne Maczulak in this enjoyable guide. As they work their way through the book, readers are introduced to the structure of the cells that make up the human body; microorganisms, fungi, algae, protists, and plants and animals; the principles of genetics; the body’s major tissues, organs, and systems; the body’s biochemistry; and ecology and ecosystems. <I>The Smart Guide to Biology</I> reveals the relevance of biology to everyday life by explaining how the body works and uses food; how people fit into food chains; how nutrients are cycled through the air, soil, water, and the human body; and how stress affects the body’s normal functioning, among other topics.