Organic Chemistry is the study of the structure, properties, composition, reactions and preparation of carbon containing compounds.
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I think it is hydrolysis, because hydro means water and olysis means to break apart.
Wells, tube-wells, rivers, lakes, dams etc. Methods of management of water resources include rainwater harvesting, construction of bawris and khadins and water harvesting structures on the level terrain.
Storing energy, producing hormones, forming the Cell Membrane