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Title: Web Tutorial 4.2 Leaves: The Site of Photosynthesis
Caption: The primary function of leaves is to absorb the sunlight that derives photosynthesis. Beyond this, through their tiny stomata, leaves serve as the plant's primary entry and exit points for gases. The most important gas that's entering is carbon dioxide, which is one of the starting ingredients for photosynthesis. What's exciting is the byproduct of photosynthesis, oxygen, and water vapor.