values-accuracy, currency, and passion for teaching and learning-have made it the most successful college introductory biology book for eight consecutive editions. Building on the Key Concepts chapter framework of previous editions, Campbell BIOLOGY, Ninth Edition helps students keep sight of the "big picture" by encouraging them to: Make connections across chapters in the text, from molecules to ecosystems, with new Make Connections Questions Make connections between classroom learning, research breakthroughs, and the real world with new Impact Figures Make connections to the overarching theme of evolution in every chapter with new Evolution sections Make connections at a higher cognitive level through new Summary of Key Concepts Questions and Write About a Theme Questions

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