Life processes are the essential functions that living organisms perform to maintain life. These processes include nutrition, respiration, excretion, growth, reproduction, and movement. Each of these functions plays a crucial role in the survival and development of an organism, allowing it to interact with its environment and adapt to changes. For example, nutrition involves obtaining and using food for energy, while respiration is the process of converting that energy into a usable form. Excretion removes waste products, and growth refers to the increase in size and complexity. Finally, reproduction ensures the continuation of a species, and movement allows organisms to navigate their surroundings.