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Methuselah Tree  
Illuminating Photosynthesis
Intro | The Cycle | Atomic Shuffle | Three Puzzlers

Room with molecules in motion

You added some carbon dioxide,
     along with some water and light.
The plant in the room is now "breathing,"
     and so is the cute little tyke.




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Explore the Methuselah Grove | A Tree's Secret to Living Long
Build a Tree-Ring Timeline | Illuminating Photosynthesis
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