The volume "General Biology" with the unified view of the common characteristics of living beings aims at the most comprehensive approach to the phenomenon of life. In its writing, an effort was made to cover a wide range of organisms in terms of their structure and functions. However, following international practice and epistemological ethics, the description of the structure and function of organs or systems focused on humans, as the human species represents the final stage of evolution. Similarly, the entries referring to higher levels of organization of the structure and function of plant organisms focus on angiosperms, which include most edible, ornamental, industrial, etc. plants. Emphasis is also placed on the field of ecology due to the importance of ecological problems today and the public's sensitivity to issues of ecological balance.[...]