Photosynthesis is the process by which plants, algae, and some bacteria use light energy to make food from carbon dioxide and water, releasing oxygen.
From Greek 'phōs, phōt-' meaning 'light' and 'synthesis' meaning 'putting together' or 'combining'. The word literally means 'putting together with light'.
The oxygen in every breath you take is a gift from photosynthesis happening all around the planet. In a way, plants are solar-powered factories turning sunlight into the sugars that feed almost every food chain on Earth.
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