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The electrons excited by sunlight are replaced by electrons from _______ in photosystem i, and by electrons from ________ in photosystem ii.
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The electrons excited by sunlight are replaced by electrons from _______ in photosystem i, and by electrons from ________ in photosystem ii.

User Cmcquillan
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The electrons excited by sunlight are replaced by electrons from Photosystem II in Photosystem I, and by electrons from water in Photosystem II.
User Sujatha
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