Answer:
A. Nuclear
Explanation:
The difference between uranium and plutonium is in the nucleus - the number of protons/neutron it contains. Therefore only by having a change to the nucleus (ie a nuclear change) can this occur.
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Ask away, read it last year and the past 5 before!!!
Went
arrived
stood
asked
payed
waited
walked
introduced
got
won
3. wore
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