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live • 35 lines
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00:00:48,399 → 00:00:49,899
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00:00:49,900 → 00:00:52,369
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And where does the hydrogen come from?
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00:00:52,700 → 00:00:56,171
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Carbon dioxide, or the hydrogen dioxide?
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00:00:56,780 → 00:01:00,217
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It comes from the water. H2O.
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00:01:00,700 → 00:01:05,297
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It is an oxidation-reduction reaction,
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and we breathe it in and reduce it...
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00:01:05,500 → 00:01:08,493
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oxidizing sugar and forming water.
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00:01:09,020 → 00:01:10,613
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Photosynthesis is what?
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