The Law of Conservation of Energy is a fundamental principle of physics stating that energy cannot be created or destroyed, but only converted from one form to another. This law posits that the total amount of energy within an isolated system remains constant over time. Energy exists in various forms, including mechanical, thermal, chemical, electrical, and radiant energy. Conversions occur constantly in physical and biological systems; for example, stored chemical energy within biochemical bonds is converted into kinetic energy to facilitate motion, or mechanical energy is transformed into heat and light through friction or resistance. This universal principle underpins the study of thermodynamics, governing processes from global climate patterns to the efficiency of engineered systems.