Information about the series: The new biology textbook for lower secondary education in high schools. The concept of Biosphere combines a textbook and a workbook. Following the 3+1 concept, the topics covered are structured as self-contained units. The layout is easy for students to follow: three information pages are followed by a material page with tasks or simple experiments. Examples support exemplary learning. The introductions are based on the students' life worlds and provide an introductory question. The illustrations correspond with the text and serve as additional motivation. Regarding the structure: The textbook is systematically organized by subject. Each main chapter begins with a double page that briefly presents the content and leads into the chapter topic with a large motivating photo. The information page at the beginning of each chapter starts with a theme.