3.Sea level
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Northern, Southern, Eastern, and Western Europe are the four European regions as defined by the UN Geoscheme for Europe.
Answer:
Factors that explain patterns of population distribution vary according to the scale of analysis (i.e., local to global). Physical factors (e.g., climate, land forms, water bodies) and human factors (e.g., cultural, economic, historical, political) influence the distribution of population.
Explanation: