Biology is the natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy.
homeostasis energy gene theory evolution Cell theory Biology
Physics is a natural science; it is the study of matter and its motion through spacetime and all that derives from these, such as energy and force.
More broadly, it is the general analysis of nature, conducted in order to understand how the world and universe behave.
For example, advances in the understanding of electromagnetism or nuclear physics led directly to the development of new products which have dramatically transformed modern-day society (e.g., television, computers, and domestic appliances)
Chemistry is the science concerned with the composition, behavior, structure, and properties of matter, as well as the changes it undergoes during chemical reactions.
It is a physical science for studies of various atoms, molecules, crystals and other aggregates of matter whether in isolation or combination, which incorporates the concepts of energy and entropy in relation to the spontaneity of chemical processes.