Life science is a branch of science that studies living organisms and their interactions with the environment. It encompasses various fields such as biology, ecology, and genetics, focusing on understanding the structure, function, growth, and evolution of life forms. Researchers in life sciences explore everything from microscopic cells to entire ecosystems. Medicine, on the other hand, is the science and practice of diagnosing, treating, and preventing diseases and injuries in humans. It combines knowledge from life sciences with clinical practices to improve health outcomes. Key areas in medicine include pharmacology, surgery, and public health, all aimed at enhancing the quality of life.