Great Extinctions of the Pastby Randi Mehling
Great Extinctions of the Past traces the rise and fall of prehistoric species and includes discussion about the time-honored and often-challenged theories regarding the five biggest extinctions on Earth. The troubling question of whether or not we are heading toward another mass extinction is also explored.
Gr 5-8- Jedicke highlights inventions that changed people's lives, showing how innovations and technologies are interdependent and are continuously being improved to be safer and more efficient. For instance, air conditioners once used hazardous substances, but today the chemicals used are better for the environment. The text is simple, clear, and concise. Unfamiliar words are in bold to refer readers to the glossary, but are also explained within the text. Mehling takes a look at mass extinctions, specifically the dinosaurs, and explores why they happened. He also discusses way to conserve our environment to prevent future extinctions. The ideas in this book are more difficult, but clearly explained. Unfamiliar words are also in bold, but they are not defined in the text. Some potentially unfamiliar words, like "paleontologist," are not in the glossary, while other more common words, such as "predictable" or "mammal" are included. Both books have engaging narratives and captioned color photos throughout. These titles are worthy additions for libraries needing current information on these topics.-Esther Keller, I.S. 278, Marine Park, NYCopyright 2006 Reed Business Information.
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