To grow plants you need ........., sun light, water, air, all of them, ........... acts as a catalyst., Potassium permenganate, hydrogen peroxide, oxygen, water, To clear the color of betadine we use........., oxygen, chlorine, carbon dioxide, nitrogen, plants make its food by ........process., oxidation, respiration, photosynthesis, digestion, By adding hydrogen peroxide to potassium permenganate.............gas is produced., oxygen, carbon dioxide, nitrogen, water vapour

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