The power source of an organ depends entirely on the type of organ being discussed. This question is ambiguous and needs clarification. We will address the two most likely interpretations:
1. Musical Organs:
A musical pipe organ, as described in the provided text from Wikipedia and Yamaha, is powered by air pressure. This air, or "wind," is channeled through pipes to create sound.
- Historically: Bellows were used to manually generate this air pressure.
- Modernly: Electric compressors provide a consistent and controlled airflow. The organist uses a keyboard to select which pipes receive air, thus determining the notes played.
2. Biological Organs (e.g., heart, liver, kidneys):
Biological organs, like the human heart, liver, and kidneys, are powered by the body's overall metabolic processes. This involves:
- Blood Supply: Oxygen and nutrients delivered through the bloodstream.
- Chemical Energy: The breakdown of glucose and other molecules to produce ATP (adenosine triphosphate), the energy currency of cells.
- Nervous System: Signals from the nervous system regulate organ function and activity.
Note: The references also mentioned the General Assembly of the United Nations, which is a "deliberative, policymaking and representative organ," but its power is derived from the member states and international agreements, not a physical power source. Some references mention the power of organ donation, which is a social and ethical concept, again not a physical power source.