From where to plants get their mass?
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Bernard Nebel.
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Thanks “Starryfields”! The following is a fun video demonstrating that many people have no idea (or misconceived ideas) about where a tree’s mass comes from. Starting with Von Helmont’s (mid 1600s) experiment proving that it cannot come from soil, it goes on to show that it comes from carbon dioxide in the air via the process of photosynthesis. (water + carbon dioxide >light energy> sugar + oxygen)
https://sites.google.com/site/experimentsinphotosynthesis8b/jan-van-helmont
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