That’s beautifully described by Richard Feynman on this clip: https://youtu.be/ifk6iuLQk28
Most of the mass of a tree (carbon) is made out of air (carbon dioxide). So, in a way, a seed is a spell for conjuring a tree out of thin air.pic.twitter.com/AdnSmVDUlY
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...but trees don't grow much above the tree-line where the air is thin, so perhaps they are conjuring themselves out of the thicker air?
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