Biology, 30.10.2021 14:00 tinytoonjr6901
Jan Baptista van Helmont performed an experiment for which he grew a willow tree in a pot for several years, during which time he kept an exact record of changes in the weight of the soil. At the end of his experiment, van Helmont concluded that the main source of the tree's biomass was .
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Jan Baptista van Helmont performed an experiment for which he grew a willow tree in a pot for severa...
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