Answer:
It may change structure do to human activity.
Explanation:
Most of Canada's population lives on its southern border (near US border).
Explanation:
The reason why most Canadian population lives in southern border is basically because most of Canada is very far north (it claims all the land to the North Pole), and only the southern regions are inhabitable. More practically, the people live where the agricultural land is located which were friendlier for them to do farming and agriculture.
The geography of Afghanistan made it easy for our soldiers to blend in with their uniforms making it difficult to invade if you can' see who your fighting.