What is the most important source of energy for Earth?
The Sun. Energy radiating from our closest star – the Sun – provides the natural power that fuels most of the physical and biological processes important to life. These processes include the movement of Earth’s atmosphere which distributes energy, produces global weather, and oceanic circulation. Sunlight energy also sustains plant and animal life. About half of the Sun’s energy is absorbed or reflected back into space as it passes through our atmosphere.
