Which one of the following statements is false?

a. About 96% of a plant's dry weight is organic matter made mostly from carbon dioxide.


b. Van Helmont concluded from his experiments that most of the weight gain of plant growth was due to the weight of water added regularly to a plant's soil.


c. The hydrogen used in photosynthesis comes from water molecules.


d. Stephen Hales postulated that plants are nourished mostly by the soil.


e. The carbon and oxygen used in photosynthesis come from the air.Which one of the following statements is false?
d

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