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The proposed textbook corresponds to the current biology curriculum for grade 11 (standard level). It consists of sections divided into paragraphs. Each chapter begins with a brief introduction with general information that will prepare the student for the perception of new material and ends with conclusions. At the end of the chapter, there is a set of questions to test your knowledge.

The textbook also contains various sections, designs for laboratory tests and practical work, and a glossary of terms.

On its pages, students will find links to the website where materials for lessons are posted, as well as tasks for self-control of knowledge.