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Gennadij [26K]
2 years ago
11

Help plz :) dyshujdheyudiokdmfj

Biology
1 answer:
Anna35 [415]2 years ago
8 0

Answer: 30 years

Explanation: what is 30 plus 30... 60 it says he died in 1930 and discoverd the thing in 1960  add 30 boom its been 30 years

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