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Concept

photosynthesis

A circular illustration depicts a plant growing from soil, with leaves reaching upwards towards a light source, symbolizing the process of photosynthesis.

The biological process by which plants, algae, and some bacteria convert sunlight, water, and carbon dioxide into oxygen and chemical energy stored in glucose. Evolving over three billion years ago, it radically altered Earth's atmosphere and forms the foundational energy supply for nearly all terrestrial life.

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