What classification of science includes chemistry, physics, and biology?

The classification of science that includes chemistry, physics, and biology is known as Natural Science. This branch of science focuses on the study of the natural world and the universe, encompassing disciplines that explore the properties, behaviors, and interactions of matter and energy.

Natural sciences are fundamentally concerned with understanding phenomena through observation and experimentation, contributing to our knowledge of the physical and biological aspects of reality. Chemistry investigates the composition and behavior of substances, physics examines the fundamental laws governing matter and energy, while biology studies living organisms and their processes. Together, these fields represent a systematic approach to exploring and explaining the workings of the natural world.

In contrast, the other classifications, such as human or social sciences, focus on human behavior and societies, practice or applied sciences emphasize practical applications of scientific principles, and basic or pure sciences might include theoretical research that is not necessarily aimed at practical applications but doesn't specifically encompass the study of the natural world as directly as natural sciences do. Hence, natural science distinctly categorizes disciplines like chemistry, physics, and biology under one fundamental branch of scientific inquiry.