The term for the maintenance of a stable internal environment in an organism is known as homeostasis. This biological process involves various physiological mechanisms that regulate factors such as temperature, pH, and the concentration of ions and nutrients. Homeostasis allows organisms to function effectively despite changes in their external environment. For example, humans maintain a constant body temperature through processes such as sweating and shivering. This balance is essential for optimal metabolic function and survival. Disruption of homeostasis can lead to health issues, highlighting its crucial role in the overall wellbeing of living organisms.