Scientists used radioactive hydrogen to

  1. Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the
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  2. Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the
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  3. Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the
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  4. Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the
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    2. what_she _did _it_again asked by what_she _did _it_again
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  5. Scientists used radioactive hydrogen to make water. They grew plants using the radioactive water. What happened to the
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  6. Scientists used radioactive hydrogen to make water. The scientists grew plants using the radioactive water. Based on their
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    2. oliver asked by oliver
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  7. Scientists used radioactive hydrogen to make water. The scientists grew plants using the radioactive water. Based on their
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  8. Scientists used radioactive hydrogen to make water. The scientists grew plants using the radioactive water. Based on their
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  9. Scientists used radioactive hydrogen to make water. The scientists grew plants using the radioactive water. Based on their
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  10. Scientists used radioactive hydrogen to make water. The scientists grew plants using the radioactive water. Based on their
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