Biology: Concepts and Investigations, an introductory biology textbook suitable for either a one- or two-semester course, emphasizes deeper learning rather than just the memorization of facts. Requiring students to understand and apply course content is a guiding principle for passionate educator and author Mariëlle Hoefnagels. Biology: Concepts and Investigations is traditionally known for its art program, readable narrative, handy study tips, Investigating Life essays, tutorial animations, and concept maps. Employing these and a variety of additional tools and resources throughout, this text offers instructors flexibility to teach introductory biology in a way that works best for them.