62 utenti della rete avevano questa curiosità: Spiegami: When a tree grows, where does the mass for its trunk and branches come from? How does the mass and stuff get to the top to make new tree parts?
Physics has the conservation of mass right? … And … Things like trees sit in the ground. Where do they get the mass to grow tall? How do they move it up their trunk? How do really old trees get more dirt when they make it into trunks?
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