What kind of hazard involves flooding, fires, and tornadoes?

violence
health
general safety
disaster

Disaster

Explanation:

Flooding, fires(unless arson) and tornadoes all fit into the class of natural disasters because it is not man-made but a natural phenomena created by the atmosphere itself.

the cell cycle is the final answer! : )

answer:

sequence 1- deletion

                  2- duplication

                  3- insertion

                  4- substitute

                  5- inversion