In a nuclear reaction, energy is released by the combination of two elements into a new element. this process is an example of

19.   In a nuclear reaction, energy is released by the combination of two elements into a new element. This process is an example of  

  A. nuclear fission.  

  B. nuclear fusion.  

  C. artificial disintegration.  

  D. natural radioactivity

Answer B

1. they vary with a higher number because boiling is way hotter than melting