1.

Which of the following professional are more likely to run the risk of a permanent change in their cell's DNA ?1. Rescarchers using carbon 14 isotope2. X - ray technicia3. Cola miner4. Dyer and painterCode

A. 2 alone
B. 1, 2 and 3
C. 1, 2 and 4
D. 1, 3 and 4
Answer» D. 1, 3 and 4


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