Which of the following is true of both nuclear fusion and nuclear fission?
a.
they both require a high energy input.
b.
they both occur without byproducts.
c.
they both have a high energy output.
d.
they both involve large atoms breaking into sm

The correct answer is C) They both have a high energy output.

Fusion is a thermo nuclear process in which two light nuclei combine to form a heavy stable nucleus with the release of high amount of energy.

For instance, formation of stars.

On the other hand, fission is thermonuclear reaction in which a heavy unstable nucleus is broken down into light stable nuclei with the release of high amount of energy.

For instance, fission of enriched Uranium.

Thus, there is high energy output in both the processes.

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