Science Common Sense

1416 - What is the primary source of energy for various systems on Earth.

The primary source of energy for various systems on Earth is the Sun. The Sun's energy is the main power source for:

• Photosynthesis (energy for plants)
• Weather and climate systems (sun's heat creates weather patterns)
• Oceans currents (sun's heat causes water to move)
• Food chain (plants are eaten by animals, which are eaten by other animals)

In short, the Sun is the main energy source that makes life on Earth possible.