Final answer:
Ragnarok, the destruction of the Norse world, is different from other mythologies as it involves the fiery end of the world.
Step-by-step explanation:
The destruction of the Norse world, known as Ragnarok, is different from that of other mythologies in that it involves the fiery end of the world. According to Norse mythology, Ragnarok is a series of events that result in the final battle between the gods and the giants, leading to the destruction of the world through fire and floods. This apocalyptic event signifies the end of the current world and the beginning of a new one.