Biology 2e is designed to cover the scope and sequence requirements of a typical two-semester biology course for science majors. The text provides comprehensive coverage of foundational research and core biology concepts through an evolutionary lens. Biology includes rich features that engage students in scientific inquiry, highlight careers in the biological sciences, and offer everyday applications. The book also includes various types of practice and homework questions that help students understand—and apply—key concepts. The 2nd edition has been revised to incorporate clearer, more current, and more dynamic explanations, while maintaining the same organization as the first edition. Art and illustrations have been substantially improved, and the textbook features additional assessments and related resources.

By the end of this section, you will be able to do the following:

Describe horizontal gene transfer
Illustrate how prokaryotes and eukaryotes transfer genes horizontally
Identify the web and ring models of phylogenetic relationships and describe how they differ from the original phylogenetic tree concept

Defenders of Wildlife provides information and interactive media to teach students about planet Earth and its' inhabitants. Students can research endangered species (over 50 listed here), learn how to defend and protect the environment, see how the web of life works and other engaging activities.

A collection of lesson plans for specific age levels to help students gain a better understanding of animals, plants, and people, and how they affect each other in ecosystems. Many of the activities provide discussion questions and charts to supplement these lessons.