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Proposed that plants obtain nourishment through their roots
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Conducted an experiment showing that plant mass comes from water, but overlooked soil weight changes
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Suggested that plants absorb nourishment from the atmosphere
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Suggested that plant leaves absorb nourishment from the air and that light plays a role
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Demonstrated that water moves from soil to leaves via transpiration.
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Discovered that plants restore air made "noxious" by animals or burning candles, later identifying oxygen
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Demonstrated that green plants absorb carbon dioxide and release oxygen under sunlight.
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Established that photosynthesis involves carbon dioxide and water, forming organic material and oxygen.
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Linked chlorophyll to carbon dioxide assimilation.
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Proposed the cohesion-tension theory, explaining how water moves upward in plants due to tension created by transpiration
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Discovered that photosynthesis involves splitting water molecules, producing oxygen.
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Used bacteria to show that oxygen production occurs in specific wavelengths of light.
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Identified the Calvin cycle, explaining how plants convert carbon dioxide into organic molecules.