In the 17th century, jan van helmont performed an experiment to determine how much of the mass gained by a plant came from soil. he grew a willow tree for five years, weighing the soil before and after. the soil lost 0.06 kg of mass, while the tree gained 74.53 kg. what inputs needed by plants were not accounted for in this experiment?
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Biology, 22.06.2019 06:30
Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?
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Biology, 22.06.2019 20:00
The means by which a cell transports large molecules out of the cell is called
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In the 17th century, jan van helmont performed an experiment to determine how much of the mass gaine...
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