Chain migration refers to the migration of a population, whereas hierarchical migration refers to the migration of a certain segment of a population.

As can be gathered by these factors that influence population growth, community interactions plays a dominate force in population dynamics. The concept of community interactions can be used to encompass such factors as migration, wealth and trade. In other words, each community has specific needs and resources. Based on the available means, or lack of means, humans will interact with other communities in order to satisfy their needs, even if this need is nothing more than selling resources to another community.

Further, as our world continues to become more and more globalized, there continues to be an increasing interaction between the world's communities. Although much of these interactions are beneficial to humanity, in terms of the long-term effects they have on population growth, many can also be...
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