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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Those types of dogs are called Avalanche Rescure Doggies
I think the answer is D but might be wrong
Once the cow wouldn't walk into the pen, Jane started prodding him with a stick.