The answer is A.changes in abiotic factors often affect population size.
Answer:
A physical Region is the term used by geographer to classify an area with unifying characteristics. Regions are areas that are extensively characterized by physical features, human influence and relationship between humanity and the environment. An example of a physical region is the Rocky Mountain in the west.
Explanation:
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I can't Understand you Sorry
A, in urban areas :)
Urban areas have bigger populations than rural ones and the Rocky Mountains have terrain that is difficult to settle on
