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You are misunderstanding photoelecric effect. Intensity of light does not have effect on maximal kinetic energy of individual ejected electrons. Maximal kinetic energy of ejected electron is determined by energy it can get from single photon which is in turn determined by frequency of light. However, intensity of light definitely does have effect on number ...


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Actually, water is used in the light-dependent portion of photosynthesis, not the Calvin cycle. The added water efficiency doesn't actually relate to water's involvement in chemical processes of photosynthesis at all. Water is instead lost incidentally through stomata when they're opened to allow CO2 into the leaves (see here for explanation). This CO2 IS ...


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