"Biological" refers to anything related to living organisms and their processes. This includes the study of life forms, such as plants, animals, and microorganisms, as well as their interactions with each other and their environments. The field of biology encompasses various sub-disciplines, including ecology, genetics, and microbiology. In a broader sense, "biological" can also describe substances or processes derived from living organisms. For example, biological products are made from natural materials, while biological processes include functions like respiration and reproduction. Understanding these concepts is essential for fields like medicine, agriculture, and environmental science.