Waterweed in a glass with water. Above it an inverted test tube also filled with water. Demonstration of photosynthesis in biology class.

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Oxygen is produced under the influence of light. Biological experiment to demonstrate photosynthesis.

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Size: 1830px × 3300px
Location: The Hague, Netherlands
Photo credit: © Menno van der Haven / Alamy / Afripics
License: Royalty Free
Model Released: No

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