Respuesta :
Nuclear fusion is the process in which two atomic nuclei are fused together into a larger single nucleus, releasing energy in the process. High pressure allows the atomic nuclei to get close enough to one another to fuse.
Im late but on edg2020 its:
Fission is a chain reaction or explosion that occurs when the nucleus breaks into two equal fragments. These fragments release other neutrons that break up more atoms. These reactions occur within a millionth of a second. This depends on compressing plutonium into a critical mass to sustain a chain reaction