Which of the following is not a potential benefit of using more nuclear energy?

A thing that's not a benefit is that using nuclear power produces nuclear waste, which takes thousands of years to break down. Too much nuclear waste can cause cancer and other DNA mutations.

Have a nice day! :)

No, the alien theory is not a scientific claim. it is based on one's beliefs. 

Asimile compares 2 things using the words, like or as.