List two problems of using nuclear energy with fission.

Answer is: The risk of accidents and storing nuclear waste.

Nuclear fission is a nuclear reaction or a radioactive decay where nucleus of atom split into smaller ligher nuclei.

Nuclear (radioactive) waste is hazardous to all forms of life and the environment.

Nuclear fission is exothermic reaction which release large amounts of energy (electromagnetic radiation or as kinetic energy, which heat reactors where fission reaction take place). That energy, if not controled, can be serious problem.