The correct answer is :
<span>D If the radiation were to leak out of the reactors, it could cause significant damage to living organisms.
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In fact, the ionizing radiation that leaks out from a nuclear reactor is able to modify the DNA of the cells of living organisms, causing mutations and/or diseases like cancer.</span>
Atomic mass = protons + neutrons
So the total number of protons and neutrons
Russia was the first (Soviet union)