Respuesta :

A type of nuclear disaster is a nuclear meltdown, which happens when a core of the nuclear reactor has a damage from overheating. Other causes include: radiation contamination and fire.
Nuclear disaster are occurences that have guild physically to important ramification to individual, the surroundings or the dexterity.

Causes are:
Dispensation of radioactivity in the environement.
Violation
Carelessness of power plant
Disintegration of exchanging information.