Photosynthesis is the process by wich plannts and other things make food. It is a chemical process that uses sunlight to turn carbon dioxide into sugars the cell can use as energy. As well as plants , many kinds of algae , protists and bacteria use it to get food. Photosynthesis is very important for life on earth. Most plants eithr directly or indirectly depend on it. The exeption are certain organisms that directly get their energy from chemical reactions , these organisms are called chemoautotrophs.
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