Photosynthesis is the process plants, algae, and some bacteria use to make food from sunlight, carbon dioxide, and water. It produces sugars that store energy and releases oxygen as a byproduct.
Why photosynthesis matters
Photosynthesis supports much of life on Earth. It provides food energy at the base of many food systems and adds oxygen to the atmosphere.
The simple equation idea
In simplified form, photosynthesis uses carbon dioxide, water, and light energy to make sugar and oxygen. The full process is more complex, but that is the basic idea.
Photosynthesis connects sunlight, air, water, and living systems in one essential process.