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Concept of emigration-immigration-migration

How dissimilar are the concepts of emigration, migration and immigration.

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Migration is the moving of the individuals of a species from one place to another. Emigration is migration seen as exit of the individuals from one area (to other where they will inhabit eternally or provisionally). Immigration is migration seen as the settling in one area (eternally or provisionally) of individuals coming from other area. Thus, individuals emigrate ‘from’ and immigrate ‘to’.

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