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Vlad1618 [11]
3 years ago
14

How do we know the oxygen released in photosynthesis comes from water?

Biology
1 answer:
Bond [772]3 years ago
8 0
Hello! The answer to your question is: O18 is a heavy isotope that was used as a tracer, and only when the H20 was the source of O18 would the O2 released be labled with the isotope.


I really hope this helped you! c:
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