Essentials of Biology is an introductory biology text for non-major students that combines Dr. Sylvia Mader's superb and accessible writing style with clear visuals, a comprehensive learning system, and abundant applications and relevancy. Essentials of Biology explains the principles of biology clearly and illustrates them in a captivating, easy-to-understand manner. It emphasizes the relevance of biology to students' lives within a framework of biodiversity and is organized around the major concepts of biology—cells theory, gene theory, evolution, the theory of homeostasis, and ecosystems. The integration of text and the digital world are now complete with the addition of Dr. Michael’s Windelspecht’s expertise in the development of digital learning assets. Dr Windelspecht has acted is the leading architect in the design of the Mader media content for McGraw-Hill's ConnectPlus and LearnSmart. ConnectPlus suite of learning tools. These assets will allow you to easily design interactive tutorial materials, enhance presentations in both the online and traditional environments, and assess the learning objectives and outcomes of your course.