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