Here's why:
* Photosynthesis: Plants and other photosynthetic organisms capture sunlight and convert it into chemical energy stored in the bonds of glucose. This process is called photosynthesis.
* Food Chain: Organisms that cannot produce their own food, like animals, get their energy by consuming other organisms that have already harnessed energy from the sun (either directly, like plants, or indirectly, by eating other animals).
Therefore, even though animals and fungi may consume other organisms, the ultimate source of their energy can be traced back to the sun.
