Respected and loved by students and professors alike, THE UNITY AND DIVERSITY OF LIFE, Ninth Edition presents the key concepts and applications of biology in an engaging, logical, and clear manner. Known for its superior writing and visually effective art program, this best-selling book provides students with one of the most readable and engaging introductions to biology in print. Respected for the way it maintains scientific accuracy while it presents information at an appropriate level for today's undergraduate nonmajors, the book has been thoroughly updated to reflect the latest research in biology.