This package includes MasteringBiology(R). Elements of Ecology, Ninth Edition continues to explain ecological processes clearly and concisely, with a greater emphasis on the relevance of ecology to everyday life and the human impact on ecosystems. This dramatically revised edition discusses issues of human ecology throughout the text and provides a greater variety of opportunities for students to learn, practice, and develop quantitative and analytical skills. Current research examples and other content updates are supported by more than 200 redesigned, full-color illustrations, graphs, and tables. With Elements of Ecology, Ninth Edition you can: * Help Students Interpret and Analyze Ecology Data: New and expanded in-text instruction and practice is provided in Interpreting Ecological Data figure questions, in-depth Quantifying Ecology boxes, and Analyzing Ecological Data case studies. Many are expanded and assignable in MasteringBiology. * Keep Your Course Current and Relevant while also keeping students focused on learning essential concepts: With updated "Field Studies" and research references throughout, the Ninth Edition also provides a streamlined discussion on metapopulations and integrates human ecology concepts into all chapters. * Personalize Learning with MasteringBiology: MasteringBiology improves results by helping students quickly master ecology concepts both in and outside the classroom. This package includes MasteringBiology, an online homework, tutorial, and assessment program designed to work with this text to personalize learning and improve results. With a wide range of interactive, engaging, and assignable activities, students are encouraged to actively learn and retain tough course concepts. Mastering is not a self-paced technology and should only be purchased when required by an instructor. Please be sure you have the correct ISBN and Course ID. Instructors, contact your Pearson representative for more information.