Bio is short for biology, which is the scientific study of living organisms and their interactions with the environment. It encompasses various sub-disciplines such as botany, zoology, microbiology, genetics, ecology, and biochemistry. Bio explores the structure, function, growth, evolution, and distribution of living organisms, as well as the processes and mechanisms that underlie life. It is a broad field that contributes to advancements in medicine, agriculture, environmental conservation, and other areas of science and technology.