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The isotope oxygen-18 has been used to trace the origin of

1. structure A
2. reaction B
3. gas E
4. gas D

If You Answer This Ill Give Brainliest 50 Points The Isotope Oxygen18 Has Been Used To Trace The Origin Of 1 Structure A 2 Reaction B 3 Gas E 4 Gas D class=

Answer :

STEVYNLENG88GO

Answer:

4. gas D

Explanation:

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