Final answer:
Homeostasis is the process by which the body maintains a stable internal environment despite changes in the external environment. It involves constant adjustments and ensures that body functions remain within a specific range.
Step-by-step explanation:
Homeostasis is the process by which constant adjustments to changes in the body occur, and equilibrium is maintained by ensuring that body functions remain within a certain range. It is the body's ability to maintain a stable internal environment despite changes in the external environment. For example, maintaining stable body temperature and body water levels are both aspects of homeostasis.