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Photosynthesis is started by a plant taking in water, carbon dioxide, and sunlight then use those materials to make sugar known as glocose which is needed for the plant to survive. 6 molecules of water+6molecules of carbon dioxide=1 molecule of sugar+6 molecules of oxygen* *=The plant doesn't use the oxygen so it puts it into the air. That's how we get our oxygen. :D

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16y ago

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