Question

Define natural growth of population. Describe the impact of migration on changing population in the world.

Hint:

When studying population changes, remember that migration can have as much impact on population size and composition as birth and death rates. Both immigration and emigration shape the demographic landscape of regions.

Answer 1

Natural Population Change:
Natural population change is determined by the difference between birth rates and death rates. It is calculated by subtracting the number of deaths from the number of births over a specific period, excluding migration. When births exceed deaths, the population grows; conversely, when deaths surpass births, the population declines. This process accounts for the intrinsic increase or decrease within a population.
Migration's Influence on Population Dynamics:
Migration significantly alters a region's population trends. Key migration types are immigration (entry into an area) and emigration (departure from an area). Migration impacts populations by:
- Boosting Population in Receiving Areas: Regions with substantial immigration often see population increases, potentially driving urban development, increasing resource demands, and fostering cultural and workforce diversity.
- Reducing Population in Sending Areas: Areas with high emigration rates may experience population decline, impacting the workforce, particularly if emigrants are young or skilled. This can hinder economic productivity and worsen aging population issues. 
- Shifting Cultural and Demographic Landscapes: Migration can alter demographic compositions by introducing new languages, religions, and customs. It also affects labor markets, with migrants contributing to both skilled and unskilled sectors. Consequently, migration is a critical factor in global population growth and distribution, influencing both population size and structure across various regions.