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Week 1 Lecture Note

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GGRC02 – Week 1 Lecture
Population numbers exponentially increased since year 1 – mainly due to more food and
technology, industrial revolution
World growth ratebegins to decrease in 2000
Population Year 1 ADChina and India most populated
Population Year 1500 ADSpanish and Portuguese shipped to America and explored these
regions and populated more in Southern America
Population Year 1900 AD:
oNorth America was now known because more people immigrated
oAfrica was shrinking because of slavery and colonization and health problems
oIndustrial revolution not only took place in Europe but also in North America
Population Year 2000 AD:
oMajor population increase in South America
oPopulation in Europe decreased due to WWI and WWII
oThe proportion of South Asia and East Asia didnt change at all over the last 2000 years,
it is still one of the most populated areas in the world
oIncrease in population in Africa, especially in Northern parts of Africa
oInterestingly, the European proportion of the world population has declined since 1900s
where it was 15%, and in 1960 it was 11%, and in 2000 it was only 6% of world
Population Year 2050 AD:
oWill be projected that there will be 9 billion people living on this Earth, 32% will be
living in North, South Africa and South and East Asia
oGrowth will decline further
Population Year 2300 AD:
o9 billion people
oPopulation might not grow further than this
oThe most increase is projected in Africa, and South and Eastern Asia will remain the
most populated areas in the world
Life expectancy
oLife expectancy is going up per person, and income is going up each year as well
oEpidemics and war are two main factors why life expectancy decreased over the years
World migration
oInternal and international migration
oAt the moment, it is estimated nearly 190 million people, about three percent of the
worlds population, lived outside their country of birth
oUS and Spain are among the countries that get the most migrants
oMexico and China are countries where most people are leaving
World population density
oPopulation density is not evenly distributed over the world, and not even in the countries
oConsequences of this might be regional conflict