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Population And Migration (Population Pyramids (Stage 1 - The pyramid looks…
Population And Migration
World Population - the total number of humans currently living on the planet - estimated 7.6 billion as of December 2017. Estimated that there will be an increase of about 11.8 billion by 2100.
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Population Pyramids
Stage 1 - The pyramid looks a bit like a (saggy) tent - this is because the life expectancy is low and there is a high birth rate. High birth rate can be because of many reasons. Mainly in LICs because there is not enough money to afford/spread contraception - therefore many children are born.
Stage 2 - The pyramid looks like an actual pyramid (with straight sides). This is due to there being a higher life expectancy (therefore there are more people of around the age of 50) hence the straight sides. Shows that the country is more developed than a stage 1 pyramid.
Stage 3 - The birth rate of the country starts to decrease (presumably due to a more developed system to use contraception and cap the births).
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One Child Policy
In the late 1970s, the Chinese government introduced a number of measures to reduce the country's birth rate and slow the population growth rate. The most important of the new measures was a one-child policy, which decreed that couples in China could only have one child.
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Disadvantages:
The children can be spoilt, lonely and obese.
Especially in urban areas, girls were abandoned because boys were wanted more because they could work on the farm and carry on the family name
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Migration
Types of Migration
2 main types
Voluntary Migration - could be rural to urban, urban to rural, usually in search of work, could be because of a better climate or a harzadous event (usually for desires)
Forced Migration - Usually because of war, persecution or disasters. This is because of survival not for desire, Could also be because of a hazardous event.
Other 'types' are:
Internal Migration - which is a change of residence within national boundaries, such as between states, provinces, cities or municipalities
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People migrate for many different reasons. These reasons can be classified as economic, social, political or environment: economic migration - moving to find work or follow a particular career path. Social migration - moving somewhere for a better quality of life or to be closer to family and friends.
Reasons for migration:
Pull Factors - Health care, peace, education, money, jobs, city life, food.
Push Factors - Climatic disasters, farmers' life, war, poverty
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