The mountains found along the west coast of North America and South America have impacted human settlement on each side of the mountain range through a decrease in fertile land and lesser population being present in the region.
What is Population?
This is defined as the total number of organisms which are present in an area at a given point in time and are influenced by the resources present for survival.
The presence of the mountain will lead to a decrease in food production and movement which therefore leads to a reduced population thereby making it the correct choice.
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