Life Builds From the Bottom Up --- Choose "Scanning Electron Microscopy," and choose Gecko from the list of organisms that appears. Then you can view the gecko's foot at several different magnifications, choose light levels, focus and contrast, and find other things to view microscopically, too.
Life Works in Cycles --- The "Doing Science" box on p.59 quotes from T.H. Huxley's "The Crayfish" published in 1880. You can find the complete text of Huxley’s book here. We recommend you read Ch. 1, The Natural History of the Common Crayfish.