Information about the title: Structure. The textbook is systematically organized by subject. Each main chapter begins with a double page that briefly introduces the content and leads into the chapter theme with a large motivational photo. The information page at the beginning of each chapter starts with a theme-related introductory photo. The subsequent introductory text is based on the image and ends with a question that introduces the chapter content. The material page includes tasks at all levels of difficulty. These also take into account the competency areas listed in the KMK recommendations for the intermediate educational qualification. The "In Focus" pages highlight additional contextual references, promoting interdisciplinary work. The method pages present important working methods in biology - students can directly apply the methods they have learned.