Use the drawing tool to construct The perpendicular bisector for segment AB

What exactly do you mean 

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!

Developed countries will see a decrease in natural resources, because their population will decrease.