Which of the following is a possible use for nuclear energy?
a. power plants
b. weapons
c. powering submarines
d. all of the above

d. all of the above
Nuclear reactions have two main types: fission reactions and fusion reactions.  When two light nuclei are joined to create a heavier and more stable nucleus, this process is called the fusion reaction. In the fission reaction, the heavy nucleus split into two nuclei with a smaller mass number.  In other words, fission is splitting of atoms although not all atoms undergo fission, only few went through normal circumstances (that is a fact).  

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