The damaging factor of a-nuclear explosion is: ) sharp drop in ambient temperature decrease in oxygen concentration in the air shock wave

The damaging factor of a nuclear explosion is the shock wave. A nuclear explosion releases a tremendous amount of energy in a very short period of time, resulting in a powerful shock wave that can cause widespread destruction and damage. This shock wave can knock down buildings, shatter windows, and cause injuries to people and animals. The sharp drop in ambient temperature and decrease in oxygen concentration in the air are also effects of a nuclear explosion, but they are not the primary damaging factors.