Which among the classified hazards have you encountered? What are the secondary and tertiary effects of the hazards in your community or family?

The study of where things are 

Historians are researchers of the past or people who understand the history of people. with this field, they must possess qualities such as being unbiased, patient, efficient reader, has a knack for logic and critical thinking and reasoning, disciplined, open-minded, resourceful, with good analytical ability, good reasoning skills and problem solving!