relevant references and examples. Includes new Links to Life feature–ends each chapter on a relevant note with short, informally written segments on familiar topics, such as “Health Food.” Contains Earth Watch, Health Watch, and Scientific Inquiry Essays that introduce readers to the exploration of key environmental and health-related issues. Features a striking illustration program with consistent, strategic use of color, revised multi-part figures, and updated labels and captions. A fascinating reference for anyone interested in learning more about biological issues in our world.

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