Describe a zombie apocalypse in 2 sentences.
A zombie apocalypse is a scenario in which the dead rise to attack the living. This nightmarish event is usually caused by a virus or some other type of science gone wrong. The resulting chaos and carnage is usually unstoppable, leaving the world in ruin.
A zombie apocalypse is a catastrophic event wherein the dead rise from their graves and begin to feed on the living. This apocalyptic scenario can be caused by a number of factors, such as a virus, a gene-modifying meteorite, or a necromancer. In any case, the survivors must band together to find a way to stop the zombie menace and avoid becoming dinner for their shambling, rotting undead foes.