What did Jan Baptista van Helmont's five-year willow tree investigation demonstrate ?

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asked Apr 19, 2022 166k views

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Miroslav Hrivik · Answer 1 · 2022-04-24T01:24:41+0000

He discovered that the willow tree weighed about 74 kg more than it did at the start after five years. This made him conclude that plant growth cannot only be due to minerals from the soil.

What did Jan Baptista van Helmont's five-year willow tree investigation demonstrate ?

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