photosynthesis

The process by which green tissues (containing chlorophyll) manufacture carbohydrate from carbon dioxide (CO2) from the air and water (H2O) from the soil, releasing oxygen, according to the generalized formula: CO2 + H2O = CH2O+ O2. The necessary energy is supplied by sunlight.



This definition is abridged from A – Z of tree terms: A companion to British arboriculture.
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