Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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In the 17th century, a Belgian doctor, Jan Baptista van Helmont,
planted a small willow tree in a pot of soil. He weighed the tree and
the soil. The tree was watered for 5 years and weighed 74.4 kg more
than when he began, but the soil had lost only 57 g of mass. Explain
what accounts for the plant’s increase in biomass
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